what medications can cause a false positive pregnancy test

ADHD Attention Deficit and Hyperactivity Disorders. It works by lowering your appetite. In addition, she writes content marketing for the healthcare industry because thats where her expertise lies. Shes dependable, versatile, flexible, and detail-oriented. Anti-epileptic medication can cause false positive results. Certain fertility treatment medications may cause a false-positive pregnancy test. 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. It cant continue to become a normal pregnancy and it can be damaging to the woman if left untreated.. This hormone rises when an egg is fertilized. Many women search for what are the reasons for false-positive pregnancy tests. Ofloxacin may also cause a false positive result for amphetamine or methamphetamine. The following drugs are synthetic hCG injections which will cause a Breindahl, T., et al. If you think youve had a false positive result on a urine drug test, talk to your healthcare provider. Antipsychotics. If you think youve had a false positive on a urine drug test, consider whether any medications you take could be responsible. See your medical professional as soon as possible if you suspect an ectopic pregnancy. Use the test when your urine is very concentrated, like when you first wake up in the morning. If it has, the chemical used to detect hCG may not work. This hormone stimulates the production of progesterone which plays an important role in maintaining pregnancy. The British Medical Journal. The trazodone metabolite meta-chlorophenylpiperazine can cause false-positive urine amphetamine immunoassay results. WebMedical Conditions. Neurological Drugs Anti-psychotics, anti-convulsant, and anti-anxiety medications Urinary Tract Infection | False-Positive Pregnancy Test: 7 Possible Ca The most common reason for a false negative is that you took the test too early. 5 Foods to Avoid When You Have Depression, How to Ensure Your Doctor Understands Your Migraine Severity. Heres how to tell. It is relatively rare but possible to have a false-negative pregnancy test. Other drugs that may cause a false result include aspirin and methadone. Some popular over-the-counter allergy and sleep meds like Benadryl and Advil PM have diphenhydramine. A follow-up ultrasound may be needed after about 1 week if its early to verify the results. However, there are rare circumstances when you may get a false positive. A chemical pregnancy occurs when an egg has fertilized but doesnt attach to the uterus. For instance, a false positive is when a drug test shows the presence of a medication or substance that you aren't actually taking. Also learn how doctors may monitor someones condition for changes after theyve contracted HIV. 1. Therefore, you need to ensure that you are not using faulty or expired pregnancy kits to get accurate results. If you hang out often with someone who puffs on pot, your urine could have traces of THC. An evaporation line is the mark left by urine after it evaporates completely from the test. Though they are about 99% accurate, pregnancy tests are not foolproof. Act quickly if you experience any of the following symptoms. False methadone-positive urine drug screens in patients treated with quetiapine. By providing your email address, you agree to receive emails containing coupons, refill reminders and promotional messages from GoodRx. If you think you may have a medical emergency, immediately call your doctor or dial 911. Your privacy is important to us. Reading the test after the recommended time may cause you to mistakenly believe you are pregnant. When youre pregnant, hCG levels rise quickly and peak at about 10 weeks. At-home pregnancy tests arent foolproof. 2023 Dotdash Media, Inc. All rights reserved. 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. Although its rare to experience a false positive pregnancy test, certain factors can make it possible. Lastly, this article answers some frequently asked questions about pregnancy tests. Often, if you test too early, the hCG levels will be below the threshold of detection of many home pregnancy tests. American Psychological Association. (2011). (2004). Verywell Family's content is for informational and educational purposes only. These include: A positive at-home pregnancy test result should always be followed up with a doctors appointment. Diuretics, medications that reduce the amount of fluid in the body, can sometimes cause a false positive pregnancy result on a urine test, according to the Mayo Clinic. 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. How Many Days Your Period Can Be Late For? Sertraline (Zoloft) is a selective serotonin reuptake inhibitor (SSRI). (2016). However, keep in mind that the earlier you take the test, the harder it is for the test to detect hCG. MA. This can cause hCG levels to remain elevated, among other more worrisome symptoms such as ongoing bleeding or fever. 1. Moreover, she can help clarify complex ideas and complicated clinical or technical information in ways that the reader can understand. Phentermine could raise a false red flag in your drug screen if you dont have a medical reason for taking amphetamines. Memory usage: 65600.0KB. The best way to avoid a false-positive pregnancy test is to wait at least a week after youve missed your period to take the test. Is the stick always right? All rights reserved. British Journal of Psychiatry. There are a few other medications that may rarely cause false positives. Obstetrics & Gynecology. Certain medications can cause a false positive result on blood test or home pregnancy tests. Why Is There No Milk Coming Out When Pumping? CBD, which doesnt make you high, is used for medical marijuana to ease pain and other symptoms. This can happen for many reasons. Yee, L.M., et al. If the miscarriage was spontaneous, its also possible that not all the pregnancy-related tissue was eliminated. Trazodone is an older antidepressant that's not commonly used for depression anymore. If you get a positive pregnancy reading, let your medical professional know, as they will want to assess and monitor your well-being. Then contact your doctor for a blood test to confirm the good news! It may also cause a positive result for benzodiazepines. Read below to learn more about each of these scenarios. Quinolones and false-positive urine screening for opiates by immunoassay technology. WebWhat can cause 3 false positive pregnancy test? If you think your urine drug test results are inaccurate, talk to your healthcare provider. Intact hormone, alpha subunit and beta subunits are present in the blood during pregnancy. During pregnancy, the hCG levels continue to rise, in general doubling every few days, and peaking at around 10 weeks. For over a decade, he has written several articles in the areas of female infertility, Erectile dysfunction, hemangioma, cervical cancer, monoclonal gammopathy of undetermined significance, mononucleosis, mitral valve disorder, nerve sheath tumor, shin splints, mild cognitive impairment, cellulitis, brain metastases, atelectasis, MCAD deficiency, lymphoma, sepsis, cardiac rehabilitation and metabolic disorder among others. What medications can cause a false positive pregnancy test? During early pregnancy, the amount of HCG in blood and urine rises quickly doubling every What Is a False Positive Pregnancy Test? What can cause a false positive? WebWhat can cause 3 false positive pregnancy test? Healthgrades Can Help. Sometimes theyre caused by hormonal levels that dont represent pregnancy. (2011). Goldstein J, et al. Can You Measure hCG Levels in Your Urine? A pregnancy test is done to determine if women are pregnant or not. 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. It is advised to consult a gynecologist for further confirmation of pregnancy if the pregnancy test results are positive. 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. Quetiapine (Seroquel) is one type of atypical antipsychotic. 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. Taking either of these medications may result in a false positive for PCP. How Many Days After Missed Period Pregnancy Test Is Positive. Taking certain medicationsparticularly fertility medicationscan result in a false positive pregnancy test reading. We avoid using tertiary references. Certain decongestants 4. Most home pregnancy tests are almost 99% accurate. Chemical pregnancies may account for 50 to 75 percent of all. If you get a positive result you can almost certainly assume you are pregnant, at which point you should visit your GP to 2005 - 2023 WebMD LLC, an Internet Brands company. The presence of protein in the urine may be due to kidney damage. An ultrasound is generally needed to determine if an intrauterine pregnancy is identified, lost, or if there is a fetus without cardiac activity. If you see an evaporation line on an at-home pregnancy test, you might be confused if youre expecting or not. (2020). Melanson, S.E.F., et al. All rights reserved. Rapid fluctuations in body weight (either loss or gain) Eating disorders. Journal of Forensic Sciences. A false-negative test may also cause women who have a higher level of hCG due to the association of antibody in the test kit with degraded hormonal fragments instead of the intact hormone. Now you know the answer, and it is important to talk to your doctor when you are not sure if you are really pregnant or have received false positives. 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. Antipsychotics often used to treat schizophrenia, such as perphenazine, prochlorperazine, She has been published at Simulation in Motion. In this scenario, the pregnancy test gives accurate results. It could happen when the sample is contaminated with detergent, soap, or even blood. WebAt-home pregnancy tests are pretty damn accurate, right? Medications: Some medications can also cause a false-positive pregnancy. Landy, G.L., et al. Promethazine is part of a group of medications called phenothiazines. If, on the other hand, you are undergoing IVF or IUI, it is best to follow your doctor's instructions and wait to get an in-office blood hCG test. Pregnancy tests measure levels of human chorionic gonadotropin (hCG) in the blood or urine. This material is provided for educational purposes only and is not intended for medical advice, diagnosis or treatment. Other drugs that may cause a false positive pregnancy test include: 6 Antipsychotics often used to treat schizophrenia, such as perphenazine, prochlorperazine, chlorpromazine, trifluoperazine, thioridazine, and thiothixene The anti-seizure/anticonvulsant drug carbamazepine used for epilepsy, facial nerve pain, and bipolar disorder masso 10 March 2023. Youll want to use a timer again while you wait for your results. You will likely notice that you continue to have vaginal bleeding. It is intended for informational purposes only. They may be able to confirm the results by running a second test. Its chemically similar to amphetamines, a stimulant used to treat ADHD and as a study aid to stay awake. An ectopic pregnancy is a serious medical emergency and must be addressed immediately. Another antipsychotic-- chlorpromazine -- can cause drug tests to come up positive for amphetamine, a stimulant. 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 . If the pregnancy test detects a certain level of hCG, it will show a positive result. Dextromethorphan is the main ingredient in many OTC cough suppressants. It can relieve coughs and runny noses. Common ones are fertility-boosting medications, such as Pregnyl, Profasi, Novarel and Ovidrel. How to Care for Your Teeth and Gums at Home. The stick is then able to detect human chorionic gonadotropin (hCG), which is a hormone produced during early pregnancy. Ovidrel Trigger Shots for Fertility Treatment. In rare circumstances, the hCG hormone False-positive amphetamine toxicology screen results in three pregnant women using labetalol. (2010). Medications for inducing ovulation. WebWhat are other conditions that can cause a positive test for hCG aside from pregnancy? This line may represent an early pregnancy, or it may be an evaporation line. What medications can cause a false positive pregnancy test? Read our. If its an employer-mandated screening. All Rights Reserved. The kidney degrades the beta subunits to produce a core fragment. Urine hCG tests are most reliable about a week after your missed period. Quetiapine, which treats schizophrenia and bipolar disorder, can wrongly show that you have methadone in your urine. What can cause a false positive pregnancy test? Coca tea could affect your screening for up to 36 hours after youve sipped it. HMG is made up of two hormones: luteinizing hormone (LH) and follicle-stimulating hormone (FSH). Clinical Toxicology. All the best, masso. A home pregnancy test checks to see if there's HCG in the urine. Constipation is a symptom, not a disease. Immunochromatographic tests: False-positive results for methadone and phencyclidine after acute poisoning with tramadol and dextropropoxyphene. Remember that false positives do happen and are not an indication that you cannot become pregnant in the future. Even with these safeguards, user error can occur. Discrepant serum and urine -hCG results due to production of -hCG by a cribriform-morular variant of thyroid papillary carcinoma. (2015). Antiepileptic or Anticonvulsants: Drugs such as barbiturates, bromides, benzodiazepines, Rachel Gurevich is a fertility advocate, author, and recipient of The Hope Award for Achievement, from Resolve: The National Infertility Association. What medications can cause a false positive pregnancy test? This may lead to a false-positive pregnancy test. Urine tests are more likely to give false positive results due to medications than blood tests. Cherwinski, K., et al. If you take a pregnancy test during this period, you may still have high HCG in your system, leading to a false positive result. 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). Medically reviewed by Sally Chao, MD. You usually conceive and become pregnant after the implantation takes place. Home pregnancy tests are a common tool used to find out if youre expecting. Detecting a chemical pregnancy before it miscarries can be emotionally hard. False-positive urine pregnancy test due to leukocyte interference. Logan, B.K., et al. A blood test will confirm that youre pregnant. Acta Clinica Belgica. This increases HCG in your body. certain medications containing the hCG hormone, like some fertility treatments. There is also the potential for user error when taking a pregnancy test. HCG levels are typically expected to double every two days if you are pregnant. It takes almost one to one-and-a-half months to have a normal level of hCG. hCG is made when a fertilized egg implants in the uterus, usually around 10 days after conception, and increases every This embryo will continue to produce hCG as long as it is in your body, but it will not develop into a fetus. Summary: A comprehensive literature review was conducted to identify false-positive UDSs associated with all clinic formulary medications, as well as common nonprescription They are thought to be very common, but they typically go undetected if a pregnancy test isnt taken. For that reason, its recommended you wait until 1 week after you expected your period to start to use an at-home pregnancy test. Casey, E.R., et al. Thats the chemical in the cannabis plant that gets you high. Taking oxaprozin may result in a false positive test for benzodiazepines. Seek immediate medical help if you suspect you have an ectopic pregnancy. On rare occasions, the pituitary can create HCG even when no disorder or tumor is present. Home pregnancy tests work by detecting the presence of human chorionic gonadotropin (hCG) in a urine sample. These eggs then pass during your menstrual cycle. 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. 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. Unfortunately, sometimes the pregnancy fails to go any further and a miscarriage happens. 2023 HealthCheckUp.com. An ectopic pregnancy is a medical emergency. Its also important to use the test when your urine isnt diluted excessively with water. Many liquid medications, vanilla extract, and breath-cleaning products often have ethanol, a form of simple grain alcohol. Baron, J.M., et al. Efavirenz (Sustiva) is an antiretroviral drug that helps treat your HIV infection. Giving birth is as individual as you are, so here are some answers to help set the record straight. Robin Elise Weiss, PhD, MPH is a professor, author, childbirth and postpartum educator, certified doula, and lactation counselor. Other meds, too, can affect your hormone levels and potentially cause a pregnancy test to read positive by mistake. Fertility treatments may lead to a false positive reading. Some urine drug tests screen for a specific medication and substances. Phentermine is a prescription medicine that helps curb your appetite. Last updated on March 15, 2022. It takes around 7 to 14 days to clear the drug from your system after injection. What Is a Blood Pregnancy Test and How Does It Work? Theyre also common during mental health evaluations. Their results are considered reliable, especially when you wait for at least a week after you miss your period to use one. Most at-home pregnancy tests are dipsticks that are placed in a urine stream. Tahirah Redhead, MPAS, PA-C, MPH, has reviewed the answers. This is called a false positive. Bupropion (Wellbutrin XL, Wellbutrin SR) may lead to false positive results for amphetamine or methamphetamine. But research shows this isnt true. They may be able to run a second test to confirm whether these results are accurate or not. Large doses of doxylamine can cause a false positive for opioids (specifically methadone). That can cause a false-positive reading on an at-home pregnancy test. Following are the medications that may lead to a false positive pregnancy test; Anti-psychotics, anti-convulsant, and anti-anxiety medications may cause a false positive test. A pregnancy test in your medical professionals office may use a blood test. A drug test can detect the presence of certain medications and substances. Sometimes you may have a fertilized egg that has not attached to the uterus lining. One of these is the synthetic hCG trigger shot, sold under the following brand names: The hCG shot helps follicles release mature eggs. Some at-home tests show two lines when hCG is detected and one line when hCG isnt detected. Youre elated, youre terrified, youre overjoyed, youre petrified all at the same time. Using an expired kit can cause false positives. The content on Healthgrades does not provide medical advice. If youve received a false positive, your doctors visit will determine that. To avoid confusion, you may want to alert the lab or the clinic beforehand that youre on efavirenz. Any medication that contains hCG can cause a false positive pregnancy test result. Diphenhydramine is an antihistamine that can help treat allergies, itching, and cold symptoms. Get prescription saving tips and more from GoodRx Health. Several of these medications for mental disorders can lead to false positive tests. False-positive and false-negative tests can occur for a variety of reasons. Methylphenidate is distinguished from amphetamine in drug-of-abuse testing. [Also Read: Can Ovarian Cancer Be Misdiagnosed As Ovarian Cyst]. The good news is theyre rare. Committee Opinion No. Common hMG medications include Menopur, Pergonal, and Repronex.. Lelievre, B., et al. Its made with the leaves of the same plant that cocaine comes from. a recent pregnancy (e.g. Trying to figure out if you need to take a pregnancy test? Leaving the dipstick in your urine stream for the exact amount of time allotted is also important. GoodRx provides no warranty for any information. Subscribe to Drugs.com newsletters for the latest medication news, new drug approvals, alerts and updates. (2015). THIS TOOL DOES NOT PROVIDE MEDICAL ADVICE. Quinolone antibiotics treat many bacterial infections. If youre prescribed methylphenidate for ADHD, you shouldnt have to worry about having a positive drug result for amphetamines. All rights reserved. Mayo Clinic: Home Pregnancy Tests: Can You Trust the Results. While the blood test also detects hCG, it is far more accurate than a home urine-based test. WebMD does not provide medical advice, diagnosis or treatment. These results are due to the high amount of white blood cells, red blood cells, and nitrates in your urine. A second, more sensitive test should be able to distinguish which of the two compounds is in your body. The same thing could happen even with alcohol-based hand sanitizers if you use them regularly. masso 10 March 2023. In this case, there are other reasons why you might have a late period and a negative pregnancy test that are good to be aware of. Women unable to ovulate on their own are often prescribed a fertility medication such as Clomid (clomiphene citrate). Its a particularly heartbreaking feeling to see your hopes dashed when you discover that the positive result was a false positive for pregnancy. (2009). 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. These include drug tests that look for: Certain prescription opioids and opiates (like methadone, fentanyl, and tramadol), Methylenedioxymethamphetamine (MDMA), more commonly known as ecstasy. These small black seeds naturally contain morphine and codeine. See additional information. In such cases, the blood tests and ultrasound are done to confirm pregnancy. Select one or more newsletters to continue. Ly, B.T., et al. An ectopic pregnancy occurs when a fertilized egg attaches somewhere outside the uterus. That means it's a sign of something elsesomething that is causing irregular bowel movements. Farley, T.M., et al. Confirmation tests are more specific for the substance or medication in question. (2010). Some pregnancy tests detect hCG very early in pregnancy. These include some anticonvulsants, anti-anxiety drugs, antihistamines, diuretics, WebWhat are other conditions that can cause a positive test for hCG aside from pregnancy? The presence of blood canalso affect your pregnancy test and is usually an indication of bladder infections or kidney disease. Some states allow CBD oil, edibles, and other products to have up to 5% of the mind-altering chemical THC. As Dr. Homaifar explains, the following can also cause menstrual irregularities: Stress. Drugs that contain the hCG hormone aimed at boosting fertility may impact pregnancy test results. However, if youre undergoing fertility treatments that require taking certain medications, you may have detectable hCG (from the medication) that can lead to a Salomons E. (2016). It helps lower blood pressure in people with high blood pressure (hypertension). Another NSAID, oxaprozin (Daypro), can be used to treat pain from arthritis. Always consult a medical provider for diagnosis and treatment. And then you later find out it was just a false positive. Urine drug tests look for the presence of specific substances. According to the National Health Service (NHS) the government-funded healthcare system based in the UKspecific medications that could cause a false 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. American Society for Reproductive Medicine. If you read the result after a long time, your urine will dry, leaving evaporation lines on it. Most of the time pregnancy tests give accurate results. GoodRx is not offering advice, recommending or endorsing any specific prescription drug, pharmacy or other information on the site. Last Updated 01 May, 2023. The demands of parenting can leave you less time to manage your depression. A chemical pregnancy is an early pregnancy loss that occurs shortly after implantation. Sometimes an evaporation line can be mistaken for a positive pregnancy test. Some drug screens may not be specific enough to tell apart sertraline and benzodiazepines. But on a drug screen, it can make you seem to have used marijuana. WebAt-home pregnancy tests are pretty damn accurate, right? Infertility drugs, for example, can contain synthetic hCG. 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. If youve taken dextromethorphan, a urine test may show positive for PCP. (2017). Checking your results during the result time frame is also important.

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