Can Cause a False Positive Drug Test Sometimes, certain medications can affect your result, so what are these medications? Farley, T.M., et al. If you miss your period but get a negative pregnancy test, there are a number of possible explanations. a recent pregnancy (e.g. Its a particularly heartbreaking feeling to see your hopes dashed when you discover that the positive result was a false positive for pregnancy. Drugs.com provides accurate and independent information on more than 24,000 prescription drugs, over-the-counter medicines and natural products. Menopause can also affect the pituitary, leading to HCG production and false positive pregnancy tests. Taking either of these medications may result in a false positive for PCP. GoodRx is not sponsored by or affiliated with any of the third-party brands identified. cause Chemical pregnancies may account for 50 to 75 percent of all. False Positive Pregnancy Test: Chances and Causes (2009). It is rare, but certain conditions may result in a false-positive pregnancy test. Cherwinski, K., et al. Certain medications can cause a false positive result on blood test or home pregnancy tests. Neurological Drugs Anti-psychotics, anti-convulsant, and anti-anxiety medications Trying to figure out if you need to take a pregnancy test? can cause a false Third Party materials included herein protected under copyright law. Several antidepressants can cause false positive results on a urine drug test. Methylphenidate is distinguished from amphetamine in drug-of-abuse testing. +0. GoodRx is not offering advice, recommending or endorsing any specific prescription drug, pharmacy or other information on the site. If youve received a false positive, your doctors visit will determine that. Find qualified telemedicine providers for a variety of symptoms and conditions. Thats more likely to happen with labs that still follow the older, lower thresholds for detecting those substances. In addition, she writes content marketing for the healthcare industry because thats where her expertise lies. Intact hormone, alpha subunit and beta subunits are present in the blood during pregnancy. Several of these medications for mental disorders can lead to false positive tests. It is intended for informational purposes only. Learn about the rare reasons for a false-positive pregnancy test. Casey, E.R., et al. Similarly, other medications like antidepressants and birth control can cause a false positive pregnancy test. Krista Elkins has 20 years of experience in healthcare as both a paramedic (NRP) and a registered nurse (RN). Breindahl, T., et al. Copyright 2023 Healthgrades Marketplace, LLC, Patent US Nos. Can It takes around 7 to 14 days to clear the drug from your system after injection. Medications That Cause False Positive Pregnancy Tests Sertraline can cause a positive result for the hallucinogen LSD on a urine drug test. (2012). Taking the test too early can also result in a false-positive. Patients in medical treatment for attention deficit/hyperactivity disorder (ADHD): Are they at risk in drug screening?. Discover the best time to be tested for HIV. Copyright WWW.NEWHEALTHADVISOR.ORG 2014, All rights Reserved. 8 Possible Causes for a False-Positive Pregnancy Test 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: Some causes of chemical pregnancies are unknown. Some medications can cause a false positive pregnancy test result. The faulty test result could happen for several days after you quit your antidepressant. Most at-home pregnancy tests are dipsticks that are placed in a urine stream. Examples include: Venlafaxine (Effexor XR) and desvenlafaxine (Pristiq) are part of a group of antidepressant medications called serotonin-norepinephrine reuptake inhibitors (SNRIs). Blood may occur in urine due to various conditions such as cystitis. Your privacy is important to us. Todays drug tests can detect even trace amounts of alcohol, and for longer after exposure. When you have a migraine, you'd try anything to feel better. However, the chance is small. This is a rare one, but some medical conditions such as certain kinds of cancer, chronic kidney disease, as well as problems with your ovaries could cause the body to have increased levels of HCG and potentially lead to a false-positive pregnancy test. Extreme blood loss or loss of the reproductive organs can occur. Never ignore professional medical advice in seeking treatment because of something you have read on the site. For that reason, its recommended you wait until 1 week after you expected your period to start to use an at-home pregnancy test. Baron, J.M., et al. Evaporation lines may show up on your test after your urine completely evaporates, usually within 10-30 minutes. Some can lead to an increase in hCG levels that are detectable by a pregnancy test, including WebMedications that may cause a false positive pregnancy: Antihistamines Antianxiety medications Antipsychotics Diuretics Parkinsons disease medications Methadone Its probably an evaporation line if the line is completely colorless. Key takeaways: Home pregnancy tests are 99% accurate when used correctly. Some infertility medications (medications that are used when a Rapid fluctuations in body weight (either loss or gain) Eating disorders. Note: Since these above mentioned medications affect HCG levels in the urine, it is therefore important to stop taking these medications for a while before taking a pregnancy test. What Is a False Positive Pregnancy Test? A procedure called dilation & curettage (D&C) may be necessary to remove the tissue inside the uterus. It could happen when the sample is contaminated with detergent, soap, or even blood. Remember that false positives do happen and are not an indication that you cannot become pregnant in the future. Some states allow CBD oil, edibles, and other products to have up to 5% of the mind-altering chemical THC. Trazodone is an older antidepressant that's not commonly used for depression anymore. What is a chemical pregnancy? Checking your results during the result time frame is also important. Some medications can cause a false positive pregnancy test. The lines are usually a bright color, such as pink, red, or blue. Archives of Pathology & Laboratory Medicine. Some antiseizure drugs. Logan, B.K., et al. (2012). A recent miscarriage or abortion, certain medications, and several other conditions may cause a false-positive result. This can cause hCG levels to remain elevated, among other more worrisome symptoms such as ongoing bleeding or fever. Nomier, M.A., et al. Most doctors, however, advise against home testing and ask that you come to the office to get a blood-based test. Theyre also common during mental health evaluations. Taking trazodone may cause a false positive test result for amphetamine or methamphetamine. This is important because differenttest measures the levels of HCG in a different way. Get prescription saving tips and more from GoodRx Health. Follow up with a blood test will give more accurate results. PCOS and Pregnancy Tests: How to Detect Pregnancy with Be sure to read the directions for your pregnancy test and follow them according to the manufacturers recommendations. Other drugs that may cause a false positive pregnancy test include: This line may represent an early pregnancy, or it may be an evaporation line. Anti-Parkinsons drugs may also affect the results of pregnancy tests. The condition in which an embryo is present at a place other than uterus such as the cervix or fallopian tube is termed as ectopic pregnancy. These include: A positive at-home pregnancy test result should always be followed up with a doctors appointment. (2011). American Addiction Centers: Whats An Amphetamine? A small quantity of this hormone is also secreted by the colon, liver, and pituitary gland. For instance, a false positive is when a drug test shows the presence of a medication or substance that you aren't actually taking. The trazodone metabolite meta-chlorophenylpiperazine can cause false-positive urine amphetamine immunoassay results. Landy, G.L., 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 drug most likely to cause a false positive reading on a pregnancy test is hCG, which is given to women undergoing fertility treatment to mature and release an egg from the ovary. Journal of Forensic Sciences. The presence of protein in the urine may be due to kidney damage. The hormone can remain in your blood and urine for up to six weeks after a pregnancy ends. False-positive and false-negative tests can occur for a variety of reasons. Causes You usually conceive and become pregnant after the implantation takes place. Here are a few common questions about false-positive pregnancy tests. A home pregnancy test has confirmed what you suspected youre pregnant. The stick is then able to detect human chorionic gonadotropin (hCG), which is a hormone produced during early pregnancy. Journal of the American Medical Association. Jensen, C.M., et al. If its part of a medical work-up. But there are a few things you should avoid doing. Evaporation lines may show up on a test you view after your urine has evaporated completely. Stout, P.R., et al. These include: There is always a chance that you may have a false-positive pregnancy test. (2015). It refers to an early pregnancy loss. Pregnancy Test Guide Check the expiration date before using the test. Your drug screen could become positive for methadone or PCP with large doses of tramadol. Cross-reactivity of pantoprazole with three commercial cannabinoids immunoassays in urine. WebMedical Conditions. What can cause a false positive? And then you later find out it was just a false positive. (2011). The level of hCG hormone will be higher and easier to detect. Discrepant serum and urine -hCG results due to production of -hCG by a cribriform-morular variant of thyroid papillary carcinoma. If youve been looking forward to a positive pregnancy test result, a false-positive is disappointing. Into astrology? Thats the chemical in the cannabis plant that gets you high. Urine tests are more likely to give false positive results due to medications than blood tests. They may be able to run a second test to confirm whether these results are accurate or not. False-positive interferences of common urine drug screen immunoassays: A review. Jao H-F, et al. Ovarian cysts, ectopic pregnancy, menopause, and many other medical conditions can also cause false positives. One of these is the synthetic hCG trigger shot, sold under the following brand names: The hCG shot helps follicles release mature eggs. If its an employer-mandated screening. What medications can cause a false positive pregnancy In rare circumstances, the hCG hormone may be present in the body when a woman is not pregnant and may lead to a pregnancy test false positive result. Please seek medical advice before starting, changing or terminating any medical treatment. Usually, you will have a heavy period soon after your period is normally due. 4 Causes of a False Positive Pregnancy Test | OhioHealth Efavirenz (Sustiva) is an antiretroviral drug that helps treat your HIV infection. (2001). The results of a pregnancy test can be divided into three important categories. Chances of False Positive Pregnancy Test: What False Positive Pregnancy Test: Causes and Coping - Verywell A second test would need to confirm it. That can cause a false-positive reading on an at-home pregnancy test. A false positive result is possible with a rapid COVID-19 test. Tahirah Redhead, MPAS, PA-C, MPH, has reviewed the answers. It may also cause a positive result for benzodiazepines. They may be able to perform a second test thats more specific and accurate. On rare occasions, the pituitary can create HCG even when no disorder or tumor is present. Pregnancy Symptoms: 10 Early Signs That You May Be Pregnant, sciencedirect.com/science/article/abs/pii/S0009898114003787, ucsfhealth.org/education/conception_how_it_works/, sciencedirect.com/science/article/pii/S2352578916300297?via%3Dihub, annlabmed.org/journal/view.html?doi=10.3343/alm.2012.32.2.167, acubalance.ca/blog/what-chemical-pregnancy-did-i-just-have-early-miscarriage-or-false-positive, columbiadoctors.org/treatments-conditions/uterine-anomaly, Weird Early Pregnancy Symptoms No One Tells You About, Cramps but No Period: 7 Early Pregnancy Symptoms, Debra Rose Wilson, Ph.D., MSN, R.N., IBCLC, AHN-BC, CHT, Causes of a Negative Pregnancy Test with No Period. (1990). This is a rare one, but some medical conditions such as certain kinds of cancer, chronic kidney disease, as well as problems with your ovaries could cause the body to have increased levels of HCG and potentially lead to a false-positive pregnancy test. Read below to learn more about each of these scenarios. Medications that may cause false positives 1. 2023 Dotdash Media, Inc. All rights reserved. Some medications can cause false positive results on a urine drug test. What Medications Can Cause a False Positive [Also Read: Can Ovarian Cancer Be Misdiagnosed As Ovarian Cyst]. Verywell Family uses only high-quality sources, including peer-reviewed studies, to support the facts within our articles. Antidepressants, decongestants, and dextromethorphan (an ingredient in Robitussin, Delsym) are examples of medications that can cause false positive results. (2013). Sertraline (Zoloft) is prescribed for depression, panic attacks, obsessive-compulsive disorder, and more. MA. A pregnancy test in your medical professionals office may use a blood test. If you're experiencing cramping but don't get your period, you might be pregnant. What Medications Can Cause A False Positive Pregnancy Test? Its important to read and follow the test instructions carefully. Oxaprozin cross-reactivity in three commercial immunoassays for benzodiazepines in urine. What medications can cause a false positive pregnancy test? Rogers, S.C., et al. Yee, L.M., et al. A chemicalpregnancy occurs when the embryo is not able to implant. There are a few things that can cause a false negative reading, namely the improper use of the test, testing too early, using an expired test, or diluting the urine by drinking too much water in advance. Although its not common, certain medications can cause a false-positive pregnancy result. (2007). Librium (chlordiazepoxide), an anti-anxiety medication also used to control agitation during alcohol withdrawal, can cause false positive pregnancy results in urine pregnancy tests, Medline Plus states, but blood tests will not show false positive results. It also discusses which tests are more accurate and how early you can take them. Our experts continually monitor the health and wellness space, and we update our articles when new information becomes available. See your medical professional as soon as possible if you suspect an ectopic pregnancy. Certain fertility treatment medications may cause a false-positive pregnancy test. Trademarks, brands, logos, and copyrights are the property of their respective owners. If the woman had blood or protein in the urine, Can Ovarian Cancer Be Misdiagnosed As Ovarian Cyst, Understanding Sleep Apnea: Causes & Symptoms for Moms, Adrenal Fatigue Symptoms in Females: Recognizing the Signs and Taking Action, Strategies for Managing Stress and Anxiety Through Therapy, 4 Reasons Why Everyone Should Visit an Orthodontist. Then contact your doctor for a blood test to confirm the good news! Interpreting Faint Lines on a Pregnancy Test. LSD. Doxylamine is an OTC medication that may help people struggling to fall asleep at night. Read on for straight talk from these experts on womens health. The hormone can remain in your blood and urine for up to 6 weeks following the end of the pregnancy. The presence of blood canalso affect your pregnancy test and is usually an indication of bladder infections or kidney disease. Human errors also lead to a false positive test. Typical doses of diphenhydramine may not cause a false positive result. For a pregnancy test through blood, you have to visit a clinical setting. Quetiapine, which treats schizophrenia and bipolar disorder, can wrongly show Keep in mind that pregnancy test results are effective for a short while only. WebAt-home pregnancy tests are pretty damn accurate, right? Antinausea medications. Home pregnancy tests are a common tool used to find out if youre expecting. If you get a positive result you can almost certainly assume you are pregnant, at which point you should visit your GP to confirm the news, and then you can spend the next nine or so months cooking your human child (psst: read up on which celebs are currently expecting).pregnant, at which Can MA. Several of these medications for mental disorders can lead to false positive tests. masso 10 March 2023. 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. 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. The Medical Conditions That Cause a False Positive The medication can cause a false-positive result if you take the test too soon after a missed period. A false-positive pregnancy test can occur when you have a severe urinary tract infection. According to the National Health Service (NHS) the government-funded healthcare system based in the UKspecific medications that could cause a false (2010). This may be due to various factors. This type of pregnancy occurs when a fertilized egg implants in an area outside the uterus. Another NSAID, oxaprozin (Daypro), can be used to treat pain from arthritis. Antipsychotics. If you hang out often with someone who puffs on pot, your urine could have traces of THC. Many women query about what medications can cause a false positive pregnancy test. Trazodone, meta-chlorophenylpiperazine (an hallucinogenic drug and trazodone metabolite), and the hallucinogen trifluoromethylphenylpiperazine cross-react with the EMITII ecstasy immunoassay in urine. Multiple medications can cause false positive results. User error, medical conditions, and certain medications can cause false Check out our Zodiac Center! Pediatric Emergency Care. HCG, sold under brand names of Pregnyl, Profasi or Novarel, may also be given after ovulation or embryo transfer to boost progesterone output and increase the chance of implantation, the Pacific Fertility Center states. If youve taken dextromethorphan, a urine test may show positive for PCP. GoodRx provides no warranty for any information. How Maintenance Medication Can Benefit Women with Advanced Ovarian Cancer. However, there are rare circumstances when you may get a false positive. What can cause a false positive pregnancy test? For instance, some tests require leaving the dipstick in the urine stream for a specific amount of time. Some examples include NSAIDs, dextromethorphan, and some antidepressants. It can be extremely upsetting to receive a false positive pregnancy test result, especially if youve had trouble getting pregnant or are actively trying to get pregnant (or both). A second, more sensitive test should be able to distinguish which of the two compounds is in your body. Bleeding and pain in early pregnancy need to be evaluated by a medical professional immediately. Can Anti-nausea drugs, including prochlorperazine, perphenazine, chlorpromazine and promethazine Sedatives that are used before and after surgery or during labor, such as promethazine Importantly, most medicines will not affect the results of a home pregnancy test. Alcohol and illicit drugs also dont affect pregnancy test results. False-positive amphetamine toxicology screen results in three pregnant women using labetalol. An untreated ectopic pregnancy can be a medical emergency. This is a rare one, but some medical conditions such as certain kinds of cancer, chronic False positive results on urine drug tests can happen.
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