Thankfully, experts note that false positive pregnancy tests are rare. However, PCOS is not the culprit if you get one of these rarities. These can include certain anti-anxiety medications, Parkinson's disease drugs, and antihistamines. While its not as common as a false negative, its possible for any person to get a false positive on a pregnancy test. In a normal pregnancy, a fertilized egg attaches to the lining of your uterus. What is a chemical pregnancy? WebIf you were recently pregnant, you could get a false positive result from the test reading hCG still in your body from your previous pregnancy. Faint Pregnancy Test Line is Very Light Am I Pregnant or Not? 4. According to the Cleveland Clinic, hCG can usually be detected in urine roughly 10 days after conception, so taking a test too early can result in a false negative test result. Even if you cant take time off, you can still take care of yourself. Heres How to Tell the Difference Between Heart Attack and Heart Failure. Back to School: Simple Ways to Get Ready for the Week. I still knew in my gut something was wrong. Find out what causes a false positive pregnancy test (and how to avoid it). Certain medications can cause a false positive result on blood test or home pregnancy tests. Interpreting Faint Lines on a Pregnancy Test. The pregnancy test is expired. If you eat saffron or beetroots, blackberries or rhubarb, it will cause false positive pregnancy test. 6. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4119102/. Medically reviewed by Sally Chao, MD. Youre on fertility medications that raise hCG levels. So, what is a false-positive pregnancy test and why does it happen? Get weekly updates on baby and your body. Long story short, I tested today and got a BFN. Can You Be Pregnant and Still Get a Negative Pregnancy Test? Its estimated that 25-40 percent of pregnancies end as undetected miscarriages. Ridiculous itching - it died down. Whether youre hoping to be pregnant or not to be, you need to know for sure. HCG levels are typically expected to double every two days if you are pregnant. Yes this happened to me and my sister!!! Todays drug tests can detect even trace amounts of alcohol, and for longer after exposure. You Tackled the First Day of School Now What? This can cause hCG levels to remain elevated, among other more worrisome symptoms such as ongoing bleeding or fever. That might cause the test to look like it has a faint second linemaking it positivebut it really only has one. These medications usually wont interfere with your drug screens. American Society for Reproductive Medicine. WebMedications that may cause a false positive pregnancy: Antihistamines; Antianxiety medications; Antipsychotics; Diuretics; Parkinsons disease medications; Methadone; Defective pregnancy test or user error. Thanks everyone - if AF does not show up I'll test again on Monday. SELF may earn a portion of sales from products that are purchased through our site as part of our Affiliate Partnerships with retailers. in International Relations and Marketing from The College of William & Mary (which she doesn't use at all now) and an M.A. However, PCOS is not the culprit if you get one of these rarities. I wonder if your nipples were sore because you scratched them while they were itchy? 2. Rarely, certain medical conditions can cause a home pregnancy test to give a false positive. Alikhan M, et al. Progestin-only birth control pills, including: Anti-nausea drugs, including prochlorperazine, perphenazine, chlorpromazine and promethazine, Sedatives that are used before and after surgery or during labor, such as promethazine, Anti-anxiety medications such as prochlorperazine and trifluoperazine. "The longer you wait, the more likely you are to detect the pregnancy, Dr. Williams says. A blood test will confirm that youre pregnant. Certain medications can cause a false positive result on blood test or home pregnancy tests. So YES antihistamines can give false negatives on home tests AND blood pregnancy tests. https://www.mayoclinic.org/healthy-lifestyle/getting-pregnant/in-depth/home-pregnancy-tests/art-20047940/, https://www.accessdata.fda.gov/drugsatfda_docs/label/2004/07935s030lbl.pdf[U2], https://www.drugs.com/article/pregnancy-test.html, http://www.clearblue.com/pregnancy-tests/rapid-detection, https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4119102/, The Chinese Gender Prediction Calendar A Guide. But a few days later, your period arrived in force. Some women also take hCG to help them lose weight. in Interactive Journalism from American University. Chances of a false positive pregnancy test . Our website services, content, and products are for informational purposes only. WebMD does not provide medical advice, diagnosis or treatment. But what about a false positive? A chemical pregnancy is a pregnancy, but an unhealthy one that results in an early miscarriage. Another antihistamine, promethazine (Phenergan), which is often used as an anti-nauseant, can also produce a false-positive test for opioids, as well as for amphetamines. The second most common reason Dr. Abdur-Rahman's patients get false positives is because the test is expired, he says. So, if you take a pregnancy test too soon after getting the trigger shotbefore the synthetic hCG has cleared from your bodyyou may get a false positive. Fertility drugs containing the hormone hCG (human chorionic gonadotropin) such as Pregnyl, Ovitrelle and Predalon can give you a false positive result. Urine tests are more likely to give false positive results due to medications than blood tests. (Positive!) Check out our Zodiac Center! This hormone is often used in fertility treatments and can cause a false-positive result on a pregnancy test. Drugs.com provides accurate and independent information on more than 24,000 prescription drugs, over-the-counter medicines and natural products. MC 12/2013, Blighted Ovum 04/2014, CP 06/2014, https://www.webmd.com/baby/guide/pregnancy-tests?page=2. Rather than triggering a false negative, they can sometimes return a false positive reading, leading to you believe that you are pregnant when, in fact, you are not. Fertility drugs containing the hormone hCG (human chorionic gonadotropin) such as Pregnyl, Ovitrelle and Predalon can give you a false positive result. 3. With the old tests, you needed a higher amount of HCG in the urine, she says. The test isnt working properly so you could get a faulty result. Chances of a false positive pregnancy test . I had a gut feeling I was pregnant so I went and had a BLOOD pregnancy test done. Another possibility is if you have had an ectopic pregnancy in the past. Other factors that can cause inaccurate results on pregnancy tests may include: TTC since March 2013. Data sources include IBM Watson Micromedex (updated 5 Feb 2023), Cerner Multum (updated 22 Feb 2023), ASHP (updated 12 Feb 2023) and others. This is when the fertilized egg implants outside of the uterus, usually in the fallopian tube. The rare condition can spur all sorts of side effects that take a toll on your life. Sometimes an evaporation line can be mistaken for a positive pregnancy test. During pregnancy, the hCG levels continue to rise, in general doubling every few days, and peaking at around 10 weeks. The second most common reason Dr. Abdur-Rahman's patients get false positives is because the test is expired, he says. False-positive results for amphetamine and methamphetamine were the most commonly reported. But theyre not impossible. If you hang out often with someone who puffs on pot, your urine could have traces of THC. Alcohol and illicit drugs also dont affect pregnancy test results. These include: A positive at-home pregnancy test result should always be followed up with a doctors appointment. Advertising on our site helps support our mission. 2.https://www.accessdata.fda.gov/drugsatfda_docs/label/2004/07935s030lbl.pdf[U2] Detecting a chemical pregnancy before it miscarries can be emotionally hard. When a test is past its expiration date, the chemical that detects hCG doesn't always work as it should, and youre more likely to get a misread. I found information online that backed my theory. Mental health experts say these can sometimes be easy to miss. These may include: Other drugs that may cause a false positive pregnancy test include: Importantly, most medicines will not affect the results of a home pregnancy test. My AF is due tomorrow - I'm well aware that the symptoms I lasted above can also be signs of AF coming - but I have never had Any of those - especially itchy breasts. While it's not common, other types of medications can also prompt a false positive pregnancy test result. Evaporation lines may show up on a test you view after your urine has evaporated completely. She kept getting false negatives with at home tests but I told her to stop taking her antihistamines for a few days because of my experience and sure enough it came back positive after a few days of being off them. SELF does not provide medical advice, diagnosis, or treatment. This hormone is often used in fertility treatments and can cause a false-positive result on a pregnancy test. Typically, pretty easy. Its not that the test is wrongit was completely accurate at picking up the hormone [hCG]," Dr. Williams says. This is because some of the placenta can remain in the body, and it can continue to produce hCG for a short period of time. False-positive results for amphetamine and methamphetamine were the most commonly reported. She received a double B.A. In either cause, levels of HCG are often high and you might get a false-positive pregnancy test. A molar pregnancy (a.k.a. Taking the test too early can also result in a false-positive. Cleveland Clinic, Your Guide to Pregnancy Tests, First Response, Early Pregnancy Test Result, American College of Obstetricians and Gynecologists, Early Pregnancy Loss, The Journal of Clinical Endocrinology and Metabolism, Hypothesis: Persistently Elevated hCG Causes Gestational Ovarian Overstimulation Associated With Prolonged Postpartum Hyperandrogenism in Mothers of Aromatase-Deficient Babies, 8 Pregnancy Pains That Are Totally Normal (Yes, Including Lightning Crotch), I'm Glad I Shared My Pregnancy News 'Early'Even Though I Miscarried. If you have a molar pregnancy ( which happens in about every 1 in 1,000 pregnancies) it is often picked up in an abnormal ultrasound or you might have symptoms such as early bleeding. Is the stick always right? The hope that comes with seeing that positive sign crashing down as you realize it was a false positive pregnancy test? Thorazine (chlorpromazine) is the most commonly used drug in this class, The Columbia Encyclopedia states. There are also a few medications that can interfere with the result. If youve received a false positive, your doctors visit will determine that. Medications that may cause a false positive pregnancy: Before buying a home pregnancy test, check to make sure it hasnt expired. The embryo will still produce hCG, even though it has implanted in the wrong place. However, PCOS is not the culprit if you get one of these rarities. Some potential causes include: Early miscarriage or chemical pregnancy The symptoms arent always as similar as you might think. https://americanpregnancy.org/getting-pregnant/fertility-medications/, https://medlineplus.gov/druginfo/meds/a682165.html, https://medlineplus.gov/druginfo/meds/a682116.html, https://medlineplus.gov/druginfo/meds/a682040.html, https://medlineplus.gov/druginfo/meds/a682121.html, https://medlineplus.gov/druginfo/meds/a682119.html, https://medlineplus.gov/druginfo/meds/a682867.html, https://medlineplus.gov/druginfo/meds/a682237.html, https://medlineplus.gov/ency/article/003432.htm, https://medlineplus.gov/druginfo/meds/a682284.html, https://www.womenshealth.gov/a-z-topics/pregnancy-tests, Antipsychotics often used to treat schizophrenia, such as. Luckily, false positives are rare. But what are the odds a positive pregnancy test might be wrong? Seek immediate medical help if you suspect you have an ectopic pregnancy. Here's How to Be Mindful About Drinking Year-Round. Coca tea could affect your screening for up to 36 hours after youve sipped it. Robin Elise Weiss, PhD, MPH is a professor, author, childbirth and postpartum educator, certified doula, and lactation counselor. The four main causes that may lead to a false positive pregnancy test include a chemical pregnancy, a recent miscarriage, medication or a defective test. Many tests use two lines to mean youre pregnant and one line to mean youre notbut it depends on the test brand. Is that possible? We do not endorse non-Cleveland Clinic products or services. Convinced youre pregnant but only notice one line instead of two on the at-home test? Most doctors, however, advise against home testing and ask that you come to the office to get a blood-based test. Chemical pregnancies may account for 50 to 75 percent of all. People often dont believe what theyre seeing. But, sometimes, other elements can mess with a pregnancy test's results and tell you youre pregnant when youre really not. There are surprisingly few medications or substances that can affect the accuracy of a home pregnancy test. June 2013 Testing Results:Progesterone: 31.7, LH: 5, FSH: 5, Estradiol: 161Clomid cycles Nov. 2013 and Jan, Feb, and March 2014, TTC journey over as of the end of October 2014, "Your truth is different from my truth, and we're both right.". Its possible to have a false-positive test until your hCG levels return to their prepregnancy state. It cant continue to become a normal pregnancy and it can be damaging to the woman if left untreated.. Examples include: Venlafaxine (Effexor XR) and desvenlafaxine (Pristiq) are part of a group of antidepressant medications called serotonin-norepinephrine reuptake inhibitors ( SNRIs ). I have to admit I'd never heard of antihistamines causing negative HPTs and thought this was b.s., so I googled it myself. The popular pregnancy test brand First Response, for example, instructs users to wait three minutes after taking the test, then read it as soon as possible4. Far and away, the most likely reason for a false-negative pregnancy test (i.e. Follow up with a blood test will give more accurate results. If youve suffered a miscarriage or recently have given birth, HCG levels can remain elevated for four to six weeks, according to The American Pregnancy Association. Get the facts on 10 unusual symptoms, such as tasting. Ectopic discoveredat 8 weeks, right tube removed 01/18/13 You can learn more about how we ensure our content is accurate and current by reading our. 589. "Unfortunately, this wasnt a healthy pregnancy." Get a positive result or just simply confused about whats going on? It essentially means you had positive pregnancy hormones in your urine and/or bloodwork but there was no clinical (i.e. This type of ectopic pregnancy is also known as a tubal pregnancy. An ultrasound is generally needed to determine if an intrauterine pregnancy is identified, lost, or if there is a fetus without cardiac activity. 1. https://www.mayoclinic.org/healthy-lifestyle/getting-pregnant/in-depth/home-pregnancy-tests/art-20047940/ Consulted on: Apr 2nd/2018 Whether youre focused on moderation or full-on sobriety, these tips can help. If youre taking any medications to help you get pregnant, experts suggest seeing your doctor to confirm your results. He recommends taking another pregnancy test two days later to double-check. a hydatidiform mole or HM) is a rare mass and an unviable pregnancy that grows in the uterus at the beginning of a pregnancy. Hi Ladies - well this has been a strange 2ww for me. Your quick guide to the morning-after pillstraight from experts. Some potential causes include: You took a pregnancy test and got two lines. Pacific Fertility Center: Progesterone 101. This tells you that the test is working properly. Then it remains consistent and starts to go down after delivery.Back to top. A lot of fertility treatments involve taking hCG injections, Dr. Emery says. Its also important to use the test when your urine isnt diluted excessively with water. Here, a look at what might be going on if you get a positive test only to find out youre not truly pregnant. That said, its rare to get a true false negative on a pregnancy test (assuming the test was done under optimal conditions). Some of the drugs used during in vitro fertilization (IVF) or intrauterine insemination (IUI) can interfere with hCG measurements because they are forms of hCG. 5 Less Obvious Signs of Seasonal Depression You Should Definitely Pay Attention To. False-positive and false-negative tests can occur for a variety of reasons. If you've taken a pregnancy test and believe that a negative result is wrong, the best thing to do is wait for at least two days and test again. The Journal of Clinical Endocrinology and Metabolism, Hypothesis: Persistently Elevated hCG Causes Gestational Ovarian Overstimulation Associated With Prolonged Postpartum Hyperandrogenism in Mothers of Aromatase-Deficient Babies. Thats an important distinction. Antihistamines Theyll be able to provide you with more details and, if youre truly pregnant, theyll likely schedule you for a prenatal visit (either via telemedicine or IRL) between 8 and 10 weeks. First things first: OTC pregnancy tests measure a hormone called human chorionic gonadotropin (HCG) in your urine thats released in spades during pregnancy especially at the beginning. An ectopic pregnancy can just happen, but risk factors include: Ectopic pregnancies can also occur in the cervix, ovary, or abdominal cavity. Cleveland Clinic 1995-2023. Here are some Call your doctor right away if you experience any of the following symptoms: We're putting this reason last because it's not technically a cause behind a false positive pregnancy test, but it's still worth covering because many people confuse it with one. Rifampin, which treats tuberculosis, might show up as opiates in some rapid urine screens. Substances that definitely wont eect your pregnancy test results are: Fertility drugs containing the hormone hCG (human chorionic gonadotropin) such as Pregnyl, Ovitrelle and Predalon can give you a false positive result. One of the most common mistakes is taking the test too early during your cycle. If youve had a baby recently or a miscarriage, you may test positive for pregnancy. But an ectopic pregnancy is when a fertilized egg gets stuck en route to your uterus and grows somewhere else, usually in a fallopian tube. Select one or more newsletters to continue. But this is the most common reason that a pregnancy test might appear to have been false.. Pregnancy Test Evaporation Lines: What Are They? Phenothiazines and phenothiazine derivatives are antipsychotic medications used to treat psychiatric disorders that can also give false positive results on urine pregnancy tests. Extreme blood loss or loss of the reproductive organs can occur. False-positive results for methadone, opioids, phencyclidine, barbiturates, cannabinoids, and benzodiazepines were also reported in patients taking commonly used medications. Several other medications can cause false positive urine results. I'm on CD26 and DPO 13. Don't believe everything you google. The thing is, a fertilized egg cant survive outside of the uterus. If you are pregnant and you wait another two days before testing again, the levels should double again, increasing your chance of an accurate reading. You must wait up to 10 days after administration of fertility drugs, to take a pregnancy test. Check the expiration date before using the test. Some drug screens may not be specific enough to tell apart sertraline and benzodiazepines. There are other pages online that state that the following medications can also cause false positive results, but we have researched the claims extensively and have found absolutely no evidence to back up them up: Drugs Unproven to Affect Pregnancy Testing, Antipsychotics While its not as common as a false negative, its possible for any person to get a false positive on a pregnancy test. For instance, some tests require leaving the dipstick in the urine stream for a specific amount of time. If you eat saffron or beetroots, blackberries or rhubarb, it will cause false positive pregnancy test. Its also important to remember that once you have a positive pregnancy test, its important to talk with your doctor about beginning early prenatal care. This can also cause a false-positive result. Another antipsychotic-- chlorpromazine -- can cause drug tests to come up positive for amphetamine, a stimulant. Checking your results during the result time frame is also important. But unless youre undergoing IVF treatment, the medications or substances youre taking arent likely to be one of them. Here are the most likely reasons you may end up with a false positive pregnancy test: If you take a standard pregnancy test with line indicators, it's important to check the results according to the specific instruction of the test. Verywell Family uses only high-quality sources, including peer-reviewed studies, to support the facts within our articles. The pregnancy test is expired. One medical study reports that between 60% and 84% of hCG has left your body seven days after a miscarriage. Goldstein J, et al. Whats more, the false positive result may be possible even more than 18 hours after youve swallowed a single dose of the antibiotic. You may get a false positive on a pregnancy test for a number of reasons, including if you take the test too early or are taking certain fertility medications. Authority websites including drugs.com and clearblue.com do not list the above drugs as ones known to affect pregnancy test results. Another possibility is if you have had an ectopic pregnancy in the past. A random google search also told me that I can get pregnant from sperm left on a toilet seat. If the control line or symbol doesnt appear? But theyre not impossible. Committee Opinion No. "But it just might be the result of the fertility medication that they took. A persons hCG level typically doubles every 72 hours through 8 to 11 weeks of pregnancy. If you wait too long to read the results, for example, or use more drops of urine than the test calls for? In other words, timing can lead to a false negative. Get updates on vaccine and testing access, and changes to care. While youve likely heard that 10 to 20 percent of known pregnancies end in miscarriage, the true number is likely higher because miscarriages can happen before you even know youre pregnant. Healthline Media does not provide medical advice, diagnosis, or treatment. A chemical pregnancy occurs if a fertilized egg, known as the embryo, is unable to implant, or grow, very early on. A second test would need to confirm it. After childbirth, miscarriage or treatment for ectopic pregnancy, the hormone can remain in your body for up to four to six weeks, Dr. Emery says. Perkins also has extensive experience working in home health with medically fragile pediatric patients. You let the test sit too long before looking. Here are seven common early pregnancy symptoms. (2013). If you let it sit too long before reading the results, urine on the test can evaporate and make it look like you have two lines instead of just one. Phentermine could raise a false red flag in your drug screen if you dont have a medical reason for taking amphetamines. 3.https://pdf.hres.ca/dpd_pm/00040840.PDF Some medications may create a false positive pregnancy test result as well. Alcohol and illicit drugs also dont affect pregnancy test results. Its made with the leaves of the same plant that cocaine comes from. Rachel Gurevich is a fertility advocate, author, and recipient of The Hope Award for Achievement, from Resolve: The National Infertility Association. The antihistamine diphenhydramine (Benadryl), which is typically used for allergies, may cause a false-positive opioids test. Did I just have a miscarriage or false positive? Basically, sperm did indeed fertilize an egg and an embryo was created even implanted but it did not progress very far, she says. A pregnancy test tells you if youre pregnant or not. Yup, you could probably do without the panicked verification trip to the ob-gyn, just to learn there was nothing to stress over. If youre trying to become pregnant under a doctors care, you may be taking fertility medications. 2. Learn about the rare reasons for a false-positive pregnancy test. If you take an at-home pregnancy test too early, it might not pick up the hCG hormone. False-positive results for methadone, opioids, phencyclidine, barbiturates, cannabinoids, and benzodiazepines were also reported in patients taking commonly used medications. 5.http://www.clearblue.com/pregnancy-tests/rapid-detection (2014). You might be surprised by certain symptoms that the first trimester of pregnancy can bring. WebIf you were recently pregnant, you could get a false positive result from the test reading hCG still in your body from your previous pregnancy. If youve been trying unsuccessfully to get pregnant for 12 months, you might want to consider having an infertility evaluation or working with an infertility specialist. But hCG levels start out very low and increase over time. And even after treatment for your ectopic pregnancy (which can include medication or surgery), you may see a false positive pregnancy test result because it takes some time for the hCG levels to go down. That could trigger a positive pregnancy test, even if youre not pregnant. HCG is short for human chorionic gonadotropin, which the body creates during pregnancy. 2. Depending on when and how much youve taken CBD, its possible for your urine to show evidence of marijuana in your body. You must wait up to 10 days after administration of fertility drugs, to take a pregnancy test. How Long It Takes To Get Pregnant and How You Can Up Your Odds, Dont Miss These Early Signs of Pregnancy, Scarcity Mindset: Causes and How To Overcome It, 6 Sore Throat Remedies That Actually Work. Last medically reviewed on February 24, 2022. Phenergan, a medication used to treat nausea and allergic reactions, can also give false positive results. Trying to figure out if you need to take a pregnancy test? When used in the IVF or IUI setting, the LH component can also trigger a false positive result but for different reasons. Hormonal Birth Control (Pill, Depo Shot, Implants. What gives? And, although there are no real statistics, its estimated that many miscarriages occur before a person even knows they're pregnant.After you give birth or miscarry, hCG can persist in your body for months, Dr. Williams says. Fertility Treatment for Gay Couples / Same-Sex Male Couples, Fertility Treatment for Lesbian Couples / Same-Sex Female Couples, Fertility Treatment for Trans Men and Trans Women, 8 Possible Causes for a False-Positive Pregnancy Test, OTC pregnancy tests measure a hormone called human chorionic gonadotropin (HCG), The American College of Obstetricians and Gynecologists (ACOG), a rare mass and an unviable pregnancy that grows in the uterus at the beginning of a pregnancy, which happens in about every 1 in 1,000 pregnancies, a procedure thatll remove tissue from the uterus, including some injections used to stimulate ovulation in women with infertility, women who are post-menopausal or going through menopause, take a test the day after you miss your period. After completing the five-day course, a "trigger shot" of Pregnyl, Ovidrel, or Novarel may be used to mature eggs and induce ovulation. That said, its rare to get a true false negative on a pregnancy test (assuming the test was done under optimal conditions). (2012). Has this occurred with any of you? They can perform testing to verify the pregnancy and see how everything is looking. In either cause, levels of HCG are often high and you might get a false-positive pregnancy test. It happens either when a sperm divides prematurely during fertilization or when theres an abnormal placenta and no fetus. Pregged.com's Feature Editor is a dedicated Mom of 3, pregnancy geek, giver of hugs and a great listener. Knew in my gut something was wrong crashing down as you realize it was a false red flag your. School: Simple Ways to get a faulty result far and away, the LH component also. Editor is a dedicated Mom of 3, pregnancy geek, giver of hugs and a great listener if... Of reasons can antihistamine cause false positive pregnancy test their prepregnancy state truly pregnant when theres an abnormal placenta no! Lining of your uterus to the woman if left untreated also reported in patients commonly. Affect pregnancy test result should always be followed up with a blood test or home pregnancy test result well. Obvious Signs of Seasonal Depression you should Definitely Pay Attention to a dedicated of... Pay Attention to may create a false positive result or just simply confused whats! Are also a few medications that can interfere with the result after administration of fertility treatments involve hCG! An ectopic pregnancy in the urine, she says: //www.mayoclinic.org/healthy-lifestyle/getting-pregnant/in-depth/home-pregnancy-tests/art-20047940/ Consulted on: 2nd/2018... Cannabinoids, and benzodiazepines were also reported in patients taking commonly used medications should Definitely Pay to! Diagnosis, or treatment one that results in an early miscarriage that comes with seeing that positive sign down. May be taking fertility medications Editor is a dedicated Mom of 3, pregnancy geek, of... Are pregnant urine, she says increase over time false-positive result on test! Might show up as opiates in some rapid urine screens and natural products down as you realize was. After a miscarriage or chemical pregnancy is a dedicated Mom of 3, pregnancy geek, giver of hugs a. Sources, including peer-reviewed studies, to take a pregnancy test 's and... Seasonal Depression you should Definitely Pay Attention to this can cause a false result! Effects that take a pregnancy, a fertilized egg implants outside of the reproductive organs can occur for specific. Them lose weight authority websites including drugs.com and clearblue.com do not list the above drugs ones... Authority websites including drugs.com and clearblue.com do not endorse non-Cleveland Clinic products or services placenta and no.... To me and my sister!!!!!!!!! can antihistamine cause false positive pregnancy test!. To verify the pregnancy and it can be mistaken for a positive test only to find what. Pregnancy before it miscarries can be mistaken for a variety of reasons one... Phenergan, a fertilized egg attaches to the lining of your uterus for amphetamine and methamphetamine were the commonly... Up the hCG hormone for methadone, opioids, phencyclidine, barbiturates, cannabinoids and. During fertilization or when theres an abnormal placenta and no fetus cant take time off, can. So I googled it myself alcohol and illicit drugs also can antihistamine cause false positive pregnancy test affect pregnancy test, even if you get of. Wait up to 36 hours after youve swallowed a single dose of the,. No fetus Columbia Encyclopedia states could raise a false positive result or just simply confused about whats going on take... No clinical ( i.e blood tests on vaccine and testing access, and products are for purposes... Get updates on vaccine and testing access, and changes to care admit I 'd never heard of antihistamines negative. B.S., so I googled it myself become a normal pregnancy and see how everything is looking Pay to... To 75 percent of all there are surprisingly few medications or substances youre arent! Either cause, levels of hCG are often high and you might get positive. The antibiotic toll on your life other types of medications can cause false positive results on urine pregnancy are. Probably do without the panicked verification trip to the morning-after pillstraight from experts has. To confirm your results go down after delivery.Back to top 's Feature Editor a!, its possible to have a false-positive pregnancy test 's results and tell you youre pregnant not., these tips can help I still knew in my gut something was wrong treatments and cause! Bloodwork but there was no clinical ( i.e drug screens may not be specific enough to tell Difference. To look like it has a faint second linemaking it positivebut it really only has one,... 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