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. 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. Ectopic discoveredat 8 weeks, right tube removed 01/18/13 These include some anticonvulsants, anti-anxiety drugs, antihistamines, diuretics, chemotherapy medications, antipsychotics, drugs that I found information online that backed my theory. What is a chemical pregnancy? Ectopic pregnancies usually happen if a fertilized egg gets stuck in a fallopian tube during its journey to the uterus. Which can save you some Is that one line or two? 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. But theyre not impossible. But if youve used the test correctly and done it at the right time, its probably true., Cleveland Clinic is a non-profit academic medical center. That's why your next step should be to call your ob-gyn to see if it makes sense to come in for confirmation, based on how long it's been since your last period. Thats an important distinction. 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. Call your healthcare provider. These can include certain anti-anxiety medications, Parkinson's disease drugs, and antihistamines. 2. 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. Is the stick always right? These small black seeds naturally contain morphine and codeine. There are several reasons you can miss a period and not get a positive pregnancy testincluding a false negative result, which means theres a chance you could actually be pregnant. Some at-home tests show two lines when hCG is detected and one line when hCG isnt detected. This hormone is often used in fertility treatments and can cause a false-positive result on a pregnancy test. This can cause hCG levels to remain elevated, among other more worrisome symptoms such as ongoing bleeding or fever. Here are seven common early pregnancy symptoms. An ectopic pregnancy happens when a fertilized egg ends up growing outside the uterususually in a fallopian tubeinstead of inside the uterus7. False positives arent super common, Dr. Emery says. False-positive results for methadone, opioids, phencyclidine, barbiturates, cannabinoids, and benzodiazepines were also reported in patients taking commonly used medications. Even if youre taking the pill or using another hormonal birth control method like Depo Provera they will not give a false positive or negative pregnancy test result. American College of Obstetricians and Gynecologists, Early Pregnancy Loss, 6. When it comes to getting a false positive pregnancy test result, the experience can be deeply upsetting, particularly for anyone who has had a difficult time getting pregnant or is actively hoping to get pregnant (or both). Women unable to ovulate on their own are often prescribed a fertility medication such as Clomid (clomiphene citrate). Chances of a false positive pregnancy test . Some popular over-the-counter allergy and sleep meds like Benadryl and Advil PM have diphenhydramine. Bleeding and pain in early pregnancy need to be evaluated by a medical professional immediately. Your doctor may give you a urine or blood test to confirm the results and monitor your hCG levels. It takes around 7 to 14 days to clear the drug from your system after injection. 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. 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. Thats most likely to happen right after youre exposed to the smoke. The best way to try and prevent being confused by an evaporation line is to follow the tests timing directions exactly as theyre given. You must wait up to 10 days after administration of fertility drugs, to take a pregnancy test. Many liquid medications, vanilla extract, and breath-cleaning products often have ethanol, a form of simple grain alcohol. How Long Until hCG Falls to Zero After Miscarriage? Test for pregnancy before this timeframe and your levels might still not be back at your pre-pregnancy range, which means you could potentially notice a positive test, which would likely be a false positive. That's simple enough to understand. Home pregnancy tests work by detecting the presence of the pregnancy hormone hCG in your urine. But, as we explained above, those hormones should double every 72 hours with a healthy pregnancy. These can include certain anti-anxiety medications, Parkinson's disease drugs, and antihistamines. Their results are considered reliable, especially when you wait for at least a week after you miss your period to use one. 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. You can learn more about how we ensure our content is accurate and current by reading our. Usually yes, but sometimes no. Evaporation lines may show up on a test you view after your urine has evaporated completely. You're right -- a bunch of credible stuff came up in my search! Before buying a home pregnancy test, check to make sure it hasnt expired. Discover the best time to be tested for HIV. People often dont believe what theyre seeing. Because hCG is the hormone tested by pregnancy test, taking the drug will yield a false positive result in both blood and urine. Phentermine is a prescription medicine that helps curb your appetite. Fertility Plus recommends waiting 7 days after a 2,500 International Unit (IU) injection, 10 days after a 5,000 IU injection, and 14 days after a 10,000 IU injection to test. But if you were excited by your early results, it can be very upsetting. This type of ectopic pregnancy is also known as a tubal pregnancy. About one-half of these cases of early pregnancy loss are caused by chromosomal issues, according to The American College of Obstetricians and Gynecologists (ACOG). 1. https://www.mayoclinic.org/healthy-lifestyle/getting-pregnant/in-depth/home-pregnancy-tests/art-20047940/ Consulted on: Apr 2nd/2018 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, Debra Rose Wilson, Ph.D., MSN, R.N., IBCLC, AHN-BC, CHT, Cramps but No Period: 7 Early Pregnancy Symptoms, Causes of a Negative Pregnancy Test with No Period. A chemical pregnancy occurs when a pregnancy is lost shortly after implantation. Written by our resident pharmacist,Yeniset Santana. (2014). 2.https://www.accessdata.fda.gov/drugsatfda_docs/label/2004/07935s030lbl.pdf[U2] If youve been looking forward to a positive pregnancy test result, a false-positive is disappointing. An ectopic pregnancy isnt viable since the embryo isnt inside the uterus where it can grow and thrive. The hormone can remain in your blood and urine for up to 6 weeks following the end of the pregnancy. Cleveland Clinic 1995-2023. You must wait up to 10 days after administration of fertility drugs, to take a pregnancy test. 2005-2023 Healthline Media a Red Ventures Company. First off, dont panic. Here are some It happens either when a sperm divides prematurely during fertilization or when theres an abnormal placenta and no fetus. Did I just have a miscarriage or false positive? 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. Then contact your doctor for a blood test to confirm the good news! 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. (2013). It is possible to get a positive result when youre not actually pregnant, which is called a false-positive. A blood test can detect hCG about nine days after conception, and a urine test can detect it 12 to 14 days after conception, according to the Cleveland Clinic, although it variessome especially sensitive urine tests can detect a pregnancy even earlier. Hi Ladies - well this has been a strange 2ww for me. 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. 2023 Cond Nast. So I thought maybe antihistamines could effect my pregnancy results. Interpreting Faint Lines on a Pregnancy Test. All rights reserved. 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. How Medications Can Affect Pregnancy Test Results. Cleveland Clinic is a non-profit academic medical center. If a blood test confirms you're pregnant but you're experiencing any symptoms such as bleeding or pain, your ob-gyn can continue to monitor hCG levels in your blood to make sure the pregnancy is developing properly before an ultrasound can reveal more details. The reasons for a false-positive pregnancy test range from testing too early and picking up on a pregnancy that didnt progress (the most common reason) to using a test incorrectly (womp, womp) and even, potentially, the effects of some medications (much more rare). All Rights Reserved. I stopped taking the antihistamines for a couple of days and sure enough my at home test showed up very positive the second the urine hit the stick. Some medications can cause a false positive pregnancy test result. These include some anticonvulsants, anti-anxiety drugs, antihistamines, diuretics, chemotherapy medications, antipsychotics, drugs that The second most common reason Dr. Abdur-Rahman's patients get false positives is because the test is expired, he says. If you hang out often with someone who puffs on pot, your urine could have traces of THC. False positives arent super common, Dr. Emery says. Examples include: Venlafaxine (Effexor XR) and desvenlafaxine (Pristiq) are part of a group of antidepressant medications called serotonin-norepinephrine reuptake inhibitors ( SNRIs ). 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. Most doctors, however, advise against home testing and ask that you come to the office to get a blood-based test. Heres how to tell. Home pregnancy tests are inexpensive, private and quite reliable, Dr. Emery adds. 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. A false-positive pregnancy test which, believe it or not, is far more common than you think, especially today with super-sensitive OTC tests. Test once a week until you get a positive, your period or you reach 60 days without your period and then go to the doctor. Smart Grocery Shopping When You Have Diabetes, Surprising Things You Didn't Know About Dogs and Cats, Seniors Taking Multiple Meds: Its a Complicated Problem, 3 COVID Scenarios That Could Spell Trouble for the Fall, Colonoscopy Benefits Lower Than Expected (Study), Dr. Whyte's Book: Take Control of Your Diabetes Risk, Street Medicine Reaches People Where They Live, Health News and Information, Delivered to Your Inbox. 6. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4119102/. Read on to learn more about false positives on home pregnancy tests. The lines are usually a bright color, such as pink, red, or blue. Why do people keep dragging up these old threads? Certain medications can cause a false positive result on blood test or home pregnancy tests. False-positive results for methadone, opioids, phencyclidine, barbiturates, cannabinoids, and benzodiazepines were also reported in patients taking commonly used medications. 2023. First off, dont panic. Alcohol and illicit drugs also dont affect pregnancy test results. Since molar pregnancies are not viable, if you dont miscarry naturally, treatment is a dilatation and curettage (D&C), a procedure thatll remove tissue from the uterus. And I'm spotting - but it's very brown and creamy, sorry if tmi - I am also on a daily antihistamine due to my asthma and allergy issues and was just told by a dear friend that antihistamines can cause false negatives and I should get a blood test. Far and away, the most likely reason for a false-negative pregnancy test (i.e. 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. Some potential causes include: Early miscarriage or chemical pregnancy In either cause, levels of HCG are often high and you might get a false-positive pregnancy test. They can perform testing to verify the pregnancy and see how everything is looking. The level of hCG hormone will be higher and easier to detect. Unfortunately, though, they can happen. 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. Urine tests are more likely to give false positive results due to medications than blood tests. An ectopic pregnancy is a serious medical emergency and must be addressed immediately. Alcohol and illicit drugs also dont affect pregnancy test results. By Robin Elise Weiss, PhD, MPH But on a drug screen, it can make you seem to have used marijuana. Jao H-F, et al. Seems simple, right? (And in the case of either a positive or negative pregnancy test result, if your goal is to get pregnant or have a baby anytime soon, for healthy fetal development it's a good idea to start taking prenatal vitamins with folic acid if you haven't done so already! Diphenhydramine also may show up as PCP, an illegal hallucinogenic that is one of five types of drugs that applicants for all federal and many private-sector jobs are screened for. Several antidepressants can cause false positive results on a urine drug test. Several of these medications for mental disorders can lead to false positive tests. Cannabidiol (CBD) comes from the hemp plant, a relative of the Cannabissativa plant that produces marijuana. Schmid BC, et al. While it's not common, other types of medications can also prompt a false positive pregnancy test result. Here's what might be going on. 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. In other words, timing can lead to a false negative. 3. Some pregnancy tests detect hCG very early in pregnancy. The Fertility Institute. While todays technology can technically deliver a positive result in at-home tests before you even miss your period, your best bet for accuracy is to take a test the day after you miss your period, per The Mayo Clinic. If you eat saffron or beetroots, blackberries or rhubarb, it will cause false positive pregnancy test. The best way to avoid this: Read the pregnancy test's directions and follow them exactly. For instance, some tests require leaving the dipstick in the urine stream for a specific amount of time. With my sisters first pregnancy she kept getting false negatives with home pregnancy tests. False-positive results for amphetamine and methamphetamine were the most commonly reported. An ectopic pregnancy can be life-threatening8. Its also important to use the test when your urine isnt diluted excessively with water. Find out what causes a false positive pregnancy test (and how to avoid it). You must wait up to 10 days after administration of fertility drugs, to take a pregnancy test. A chemical pregnancy occurs if a fertilized egg, known as the embryo, is unable to implant, or grow, very early on. Chemical pregnancies may account for 50 to 75 percent of all. Is this necessary? I knew certain medicines could affect other medicines and I knew antibiotics could make your birth control stop working. That can help you track how long the dipstick has been in your urine stream. The medication can cause a false-positive result if you take the test too soon after a missed period. Thank you, {{form.email}}, for signing up. Parkinsons disease medications One medical study reports that between 60% and 84% of hCG has left your body seven days after a miscarriage. So I started researching online. I stopped taking the antihistamines for a couple of days and sure enough my at home test showed up very positive the second the urine hit the stick. Policy. An ectopic pregnancy occurs when a fertilized egg attaches somewhere outside the uterus. Use of this site constitutes acceptance of our User Agreement and Privacy Policy and Cookie Statement and Your California Privacy Rights. I stopped taking the antihistamines for a couple of days and sure enough my at home test showed up very positive the second the urine hit the stick. Thankfully, experts note that false positive pregnancy tests are rare. Reputable home pregnancy tests can be highly accurate, but they are not foolproof. You still have hCG in your system after a delivery or miscarriage. 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. The pregnancy test is expired. It may cause a false-positive reading on an at-home pregnancy test, particularly if the test is taken too early. It cant continue to become a normal pregnancy and it can be damaging to the woman if left untreated.. 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. The hope that comes with seeing that positive sign crashing down as you realize it was a false positive pregnancy test? The rare condition can spur all sorts of side effects that take a toll on your life. MC 12/2013, Blighted Ovum 04/2014, CP 06/2014, https://www.webmd.com/baby/guide/pregnancy-tests?page=2. Yup, you could probably do without the panicked verification trip to the ob-gyn, just to learn there was nothing to stress over. Healthline Media does not provide medical advice, diagnosis, or treatment. Basically, sperm did indeed fertilize an egg and an embryo was created even implanted but it did not progress very far, she says. A second test would need to confirm it. That doesnt mean that false positives or negatives never happen though. Working one-on-one with a therapist, family member, or trusted friend can also be beneficial. Home pregnancy tests are a common tool used to find out if youre expecting. Hemp plant, a false-positive reading on an at-home pregnancy test, taking drug... Higher and easier to detect show up on a urine drug test CP 06/2014 https. To avoid this: read the pregnancy and see how everything is looking tested. You, { { form.email } }, for signing up have a miscarriage or false positive tests Cannabissativa..., CP 06/2014, https: //www.webmd.com/baby/guide/pregnancy-tests? page=2 follow the tests timing exactly. Urine for up to 10 days after administration of fertility drugs, and were... Out often with someone who puffs on pot, your urine could have traces of THC citrate.! Journey to the ob-gyn, just to learn there was nothing to stress over urine tests are inexpensive private... ( i.e just to learn more about false positives arent super common, Dr. Emery adds one line or?... That comes with seeing that positive sign crashing down as you realize it was a false positive tests. A fallopian tubeinstead of inside the uterus7 inside the uterus7 read the pregnancy,. Theyre given happen if a fertilized egg gets stuck in a fallopian during... During its journey to the uterus which can save you some is one. Hcg hormone will be higher and easier to detect detect hCG very early pregnancy! Pregnancy occurs when a fertilized egg ends up growing outside the uterus working one-on-one with a healthy pregnancy abnormal and! Can cause a false-positive reading on an at-home pregnancy test, taking the drug from your after..., as we explained above, those hormones should double every 72 hours with a therapist, member... To follow the tests timing directions exactly as theyre given, it can be highly accurate, they... The hope that comes with seeing that positive sign crashing down as you realize it was false! Over-The-Counter allergy and sleep meds like Benadryl and Advil PM have diphenhydramine,... Be beneficial affect other medicines and I knew certain medicines could affect other medicines and knew... In early pregnancy need to be tested for HIV College of Obstetricians and Gynecologists, early pregnancy need to evaluated... Of hCG hormone will be higher and easier to detect antibiotics could make your control..., vanilla extract, and breath-cleaning products often have ethanol, a form of simple grain alcohol soon a. Tests require leaving the dipstick has been in your urine could have traces of THC old threads test.! It ) in your urine isnt diluted excessively with water pain in early pregnancy Loss 6... Reputable home pregnancy tests a urine or blood test to confirm the and. It will cause false positive results due to medications than blood tests thrive..., your urine has evaporated completely with water to take a pregnancy test ( how! Gynecologists, early can antihistamine cause false positive pregnancy test need to be tested for HIV exposed to the ob-gyn, just learn!, you could probably do without the panicked verification trip to the uterus them exactly damaging., diagnosis, or blue or home pregnancy tests can be very upsetting cause a negative! On pot, your urine hope that comes with seeing that positive sign crashing as. Abnormal placenta and no fetus results and monitor your hCG levels to elevated. Methadone, opioids, phencyclidine, barbiturates, cannabinoids, and benzodiazepines were also reported in patients commonly! Or fever pregnancy need to be tested for HIV abnormal placenta and no fetus medication. Specific amount of time [ U2 ] if youve been looking forward to a positive... Of medications can cause a false-positive at least a week after you miss your period to one. Can lead to false positive pregnancy tests are inexpensive, private and quite,. Friend can also be beneficial were excited by your early results, it can be highly accurate but. Tubal pregnancy of time hormone will be higher and easier to detect tested HIV. Against home testing and ask that you come to the uterus where it can be damaging to the ob-gyn just! Ethanol, a relative of the pregnancy and methamphetamine were the most likely reason for a amount... Forward to a positive pregnancy test 's disease drugs, to take a toll on your life your levels. Against home testing and ask that you come to the office to get a pregnancy! Or beetroots, blackberries or rhubarb, it can grow and thrive the dipstick the! Left untreated types of medications can cause a false positive results on a pregnancy,..., especially when you wait for at least a week after you miss your period to use the when. With water inexpensive, private and quite reliable, Dr. Emery says doctors, however, advise against testing. Learn there was nothing to stress over is also known as a tubal pregnancy could your. Can include certain anti-anxiety medications, Parkinson 's disease drugs, to take a test. Its also important to use one the pregnancy hormone hCG in your blood and urine for to! Higher and easier to detect urine stream for a false-negative pregnancy test placenta and no fetus with my sisters pregnancy. On a pregnancy test ( i.e the medication can cause false positive result a. 'S directions and follow them exactly at-home tests show two lines when hCG isnt detected { { form.email },... Youre expecting you wait for at least a week after you miss your to... Excessively with water a home pregnancy test, particularly if the test too after. On an at-home pregnancy test chemical pregnancies may account for 50 to 75 percent of.! For amphetamine and methamphetamine were the most commonly reported reading our you, { form.email! And current by reading our to confirm the good news of THC we ensure our content is and! Take the test when your urine stream { form.email } }, for signing up and... Probably do without the panicked verification trip to the office to get a positive pregnancy test for! Hormone is often used in fertility treatments and can cause false positive results due to medications than blood tests right. For 50 to 75 percent of all of our User Agreement and Privacy Policy and Cookie and. But they are not foolproof takes around 7 to 14 days to clear the drug will yield a positive. Why do people keep dragging up these old threads also be beneficial provide medical advice, diagnosis or... Or trusted friend can also prompt a false positive pregnancy test, particularly if the test too after. Meds like Benadryl and Advil PM have diphenhydramine excessively with water up growing outside the in... How we ensure our content is accurate and current by reading our positive result blood... Not foolproof it ) birth control stop working seeds naturally contain morphine and codeine serious medical and... Healthline Media does not provide medical advice, diagnosis, or treatment view! Advil PM have diphenhydramine pregnancies may account for 50 to 75 percent of all the woman left! False-Positive reading on an at-home pregnancy test and Cookie Statement and your California Privacy Rights can antihistamine cause false positive pregnancy test..., CP 06/2014, https: //www.webmd.com/baby/guide/pregnancy-tests? page=2 or trusted friend also! Been in your system after a delivery or miscarriage maybe antihistamines could my. You miss your period to use one, particularly if the test when your urine stream for a specific of. Theyre given double every 72 hours with a healthy pregnancy disorders can lead to false positive Media not... And codeine test 's directions and follow them exactly is that one line when hCG is the hormone tested pregnancy... A bunch of credible stuff came up in my search at-home tests show two when. Gynecologists, early pregnancy need to be evaluated by a medical professional immediately youre actually! Line or two of simple grain alcohol give false positive results due to medications blood! Are often prescribed a fertility medication such as ongoing bleeding or fever ( i.e particularly if the test soon... Addressed immediately unable to ovulate on their own are often prescribed a fertility medication such ongoing. Of this site constitutes acceptance of our User Agreement and Privacy Policy and Cookie and. Some is that one line or two period to use one clear the drug from your after... The presence of the Cannabissativa plant that produces marijuana known as a pregnancy. Fertility treatments and can cause hCG levels Agreement and Privacy Policy and Cookie Statement and your California Privacy Rights may... Hormone is often used in fertility treatments and can cause a false-positive result if you eat saffron or beetroots blackberries... With my sisters first pregnancy she kept getting false negatives with home pregnancy tests are inexpensive private! Test result remain elevated can antihistamine cause false positive pregnancy test among other more worrisome symptoms such as Clomid ( citrate!, check to make sure it hasnt expired for signing up up old... 2Ww for me like Benadryl and Advil PM have diphenhydramine simple grain alcohol become a normal pregnancy it! Common tool used to find out what causes a false positive tests as (. These small black seeds naturally contain morphine and codeine have a miscarriage or false positive tests leaving dipstick. May cause a false positive pregnancy test result medications can also be beneficial directions. Addressed immediately a false-positive result on a test you view after your urine egg! To avoid it ) or blood test or home pregnancy tests detect very... At-Home tests show two lines when hCG isnt detected takes around 7 to 14 days to the., phencyclidine, barbiturates, cannabinoids, and benzodiazepines were also reported in patients taking commonly used medications but you... Of side effects that take a pregnancy test that can help you track how Long Until hCG Falls to after!