what medications can cause a false positive pregnancy test

It may also cause a positive result for benzodiazepines. After a miscarriage or abortion, the hCG hormone may remain in your system for up to 6 weeks. Saudi Pharmaceutical Journal. These five important signs will help you decide. WebMD does not provide medical advice, diagnosis or treatment. Here's what might be going on. Home pregnancy tests are a common tool used to find out if youre expecting. Some pregnancy tests detect hCG very early in pregnancy. This is before the placenta is formed and functional around week 12. If your miscarriage was spontaneous, tissue might remain in the uterus. It is advised to consult a gynecologist for further confirmation of pregnancy if the pregnancy test results are positive. Certain complications with implantation of a fertilized egg such as an ectopic pregnancy, chemical pregnancy, or recent miscarriage may cause a misreading. 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. Taking the test too early can also result in a false-positive. False positive If the miscarriage was spontaneous, its also possible that not all the pregnancy-related tissue was eliminated. Confirmation tests are more specific for the substance or medication in question. False-Positive Pregnancy Test: Causes and Probability Methadone, given to treat heroin addiction, can cause a false positive result on urine pregnancy tests, Cigna states. Follow up with a blood test will give more accurate results. Mayo Clinic: Home Pregnancy Tests: Can You Trust the Results? Healthgrades Can Help. Depending on when and how much youve taken CBD, its possible for your urine to show evidence of marijuana in your body. But on a drug screen, it can make you seem to have used marijuana. (n.d.). Learn about potential problems associated with rheumatoid arthritis and pregnancy, including triggers, preeclampsia, premature birth, and low birth, Healthline has strict sourcing guidelines and relies on peer-reviewed studies, academic research institutions, and medical associations. Get the facts on 10 unusual symptoms, such as tasting. When youre pregnant, hCG levels rise quickly and peak at about 10 weeks. Why Did a Second Line Appear Later on My Pregnancy Test? Can Many women query about what medications can cause a false positive pregnancy test. Thats more likely to happen with labs that still follow the older, lower thresholds for detecting those substances. (2012). Quetiapine, which treats schizophrenia and bipolar disorder, can wrongly show that you have methadone in your urine. Some medications can cause a false positive pregnancy test result. Home pregnancy tests measure levels of human chorionic gonadotropin (hCG) hormone in urine. Taking any medication that contains hCG can cause a false-positive result. Drugs that contain the hCG hormone aimed at boosting fertility may impact pregnancy test results. These may include: The following drugs are synthetic hCG injections which will cause a Medications: Some medications can also cause a false-positive pregnancy. We comply with the HONcode standard for trustworthy health information. It is rare, but certain conditions may result in a false-positive pregnancy test. The following drugs are synthetic hCG injections which will cause a pregnancy test to appear positive: It is a good idea to wait at least 7-14 days after your last injection before taking a pregnancy test. What Medications Can Cause a False Positive Pregnancy Test? The home pregnancy test can be done at home. Menopause can also affect the pituitary, leading to HCG production and false positive pregnancy tests. Any medication that contains hCG can cause a false positive pregnancy test result. So if you use anything with ethyl alcohol, your breath, blood, or urine sample might get flagged for possible signs of drinking. Some medications can cause a false positive pregnancy test result. (2004). Some states allow CBD oil, edibles, and other products to have up to 5% of the mind-altering chemical THC. Ofloxacin may also cause a false positive result for amphetamine or methamphetamine. Oxaprozin cross-reactivity in three commercial immunoassays for benzodiazepines in urine. A false-positive might happen if you had a pregnancy loss soon after the fertilized egg attached to the uterine lining.You also may get a false-positive if you take a pregnancy test soon after taking fertility medicine that contains HCG . Thorazine (chlorpromazine) is the most commonly used drug in this class, The Columbia Encyclopedia states. Annals of Emergency Medicine. False-positive interferences of common urine drug screen immunoassays: A review. Medications that may cause a false positive pregnancy: Before buying a home pregnancy test, check to make sure it hasnt expired. False-positive urine phencyclidine immunoassay screen result caused by interference by tramadol and its metabolites. Discrepant serum and urine -hCG results due to production of -hCG by a cribriform-morular variant of thyroid papillary carcinoma. CBD, which doesnt make you high, is used for medical marijuana to ease pain and other symptoms. Methylphenidate is distinguished from amphetamine in drug-of-abuse testing. This line may represent an early pregnancy, or it may be an evaporation line. Taking certain medicationsparticularly fertility medicationscan result in a false positive pregnancy test reading. There is also the potential for user error when taking a pregnancy test. Reduced interference by phenothiazines in amphetamine drug of abuse immunoassays. False-positive and false-negative tests can occur for a variety of reasons. Youll want to use a timer again while you wait for your results. Rohit Jain is an IPR Specialist and Medical Content Writing Expert. You can mistake an evaporation line for a false positive pregnancy test. (2017). A chemical pregnancy occurs when an egg has fertilized but doesnt attach to the uterus. Journal of the American Medical Association. Some home pregnancy tests are more reliable than others. These 10 Medications Can Cause a False Positive on It can relieve coughs and runny noses. Always consult a medical provider for diagnosis and treatment. (2013). Can You Be Pregnant and Still Get a Negative Pregnancy Test. WebMedications that may cause a false positive pregnancy: Antihistamines Antianxiety medications Antipsychotics Diuretics Parkinsons disease medications Methadone Phenergan, a medication used to treat nausea and allergic reactions, can also give false positive results. (2009). Its a particularly heartbreaking feeling to see your hopes dashed when you discover that the positive result was a false positive for pregnancy. You usually experience this problem due to genetically abnormal pregnancies. Large doses of doxylamine can cause a false positive for opioids (specifically methadone). How often do false-positive phencyclidine (PCP) urine screens occur with use of common medications?. This is a rare one, but some medical conditions such as certain kinds of cancer, chronic Act quickly if you experience any of the following symptoms. +0. Check the expiration date and read through the directions. 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. Phentermine could raise a false red flag in your drug screen if you dont have a medical reason for taking amphetamines. They include but arent limited to: Rarely, certain medical conditions can cause a home pregnancy test to give a false positive. Sometimes an evaporation line can be mistaken for a positive pregnancy test. GoodRx works to make its website accessible to all, including those with disabilities. Find qualified telemedicine providers for a variety of symptoms and conditions. Can Consider setting a timer on a stopwatch or your phone. masso 10 March 2023. Another NSAID, oxaprozin (Daypro), can be used to treat pain from arthritis. Several factors, including pollution of the sample or wrong operations of the doctor, can even affect the result of a pregnancy test performed on blood. (1990). Can Cause A False Positive Pregnancy Test WebAt-home pregnancy tests are pretty damn accurate, right? This may be due to various factors. Landy, G.L., et al. Enter your email to sign up. (2014). This material is provided for educational purposes only and is not intended for medical advice, diagnosis or treatment. Diuretics such as furosemide also affect pregnancy test results. Current time: 05/01/2023 09:39:10 a.m. UTC Perkins also has extensive experience working in home health with medically fragile pediatric patients. All rights reserved. What Is a Blood Pregnancy Test and How Does It Work? Shes a conscientious, research-driven writer who cares about deadlines, accuracy, and ethics. But there are a few things you should avoid doing. It is possible to get a positive result when youre not actually pregnant, which is called a false-positive. If the pregnancy test detects a certain level of hCG, it will show a positive result. The most common reason for a false negative is that you took the test too early. Unfortunately, inaccurate results on drug tests can happen. While rare, labetalol could cause a false positive test for amphetamine or methamphetamine. Other medications which may cause a false positive pregnancy test result are progestin-only birth control pills and some antipsychotics, antihistamines, Be sure to read the directions for your pregnancy test and follow them according to the manufacturers recommendations. Some companies may ask potential hires to complete a drug screening. There are many reasons you might get a urine drug screen. Some women do not pay attention to the expiration date mentioned on pregnancy tests. Purpose: The implications of potential false-positive urine drug screen (UDS) results for patients receiving commonly prescribed medications were evaluated. Although its not common, certain medications can cause a false-positive pregnancy result. In this scenario, the pregnancy test gives a negative result even when the pregnancy is achieved. Depending on your situation, it might be a relief to find out youre not pregnant. If you read the result after a long time, your urine will dry, leaving evaporation lines on it. The good news is theyre rare. Chances of False Positive Pregnancy Test: What An untreated ectopic pregnancy can be a medical emergency. A chemical pregnancy is a pregnancy, but an unhealthy one that results in an early miscarriage. False positive results on urine drug tests can happen. What Medications Can Cause a False Positive False methadone-positive urine drug screens in patients treated with quetiapine. Its important to follow package directions exactly. MA. Certain fertility treatment medications may cause a false-positive pregnancy test. Learn more about how we ensure our content is accurate, thorough, and unbiased by reading our. What Can Cause a False Pregnancy Test? Salomons E. (2016). But chances are very low that youll have enough THC to trigger the positive result in the screens used by the federal government and many private employers. 1. One hundred false-positive amphetamine specimens characterized by liquid chromatography time-of-flight mass spectrometry. Key takeaways: Home pregnancy tests are 99% accurate when used correctly. Taking either of these medications may result in a false positive for PCP. Many home pregnancy test kits include two tests. Read below to learn more about each of these scenarios. This can cause hCG levels to remain elevated, among other more worrisome symptoms such as ongoing bleeding or fever. A second test would need to confirm it. Copyright 2023 Leaf Group Ltd. / Leaf Group Media, All Rights Reserved. These eggs then pass during your menstrual cycle. Typically, it takes about 10 days for the synthetic hCG in these trigger shots to clear from your blood and urine. When this occurs, sometimes a minor surgical procedure called a dilation and curettage (D and C) is often required to remove the tissue, depending upon your symptoms and how far along the pregnancy was. If you think youve had a false positive on a urine drug test, consider whether any medications you take could be responsible. Sometimes, a faint-colored second line will appear. The presence of blood canalso affect your pregnancy test and is usually an indication of bladder infections or kidney disease. Sometimes you may have a fertilized egg that has not attached to the uterus lining.

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