Read on to learn more about false positives on home pregnancy tests. Chemical pregnancy. It’s possible to have a positive pregnancy test even if you aren’t technically pregnant. . Ectopic pregnancy. . Recent miscarriage or abortion. . User error. . Evaporation lines. . Medications. . Certain medical conditions. Medications that Can Affect a Pregnancy Test Fertility drugs containing the hormone hCG (human chorionic gonadotropin) such as Pregnyl®, Ovitrelle® and Predalon® can give you a false positive result. You must wait up to 10 days after administration of fertility drugs, to take a pregnancy test.
What will mess up a pregnancy test?
Home pregnancy tests work by detecting the presence of human chorionic gonadotropin (hCG) in a urine sample. 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.
What should you not do before pregnancy test?
Don’t drink too much water, or any liquid, before taking a pregnancy test. Excess fluids can impact the accuracy of the test results, so if your urine is diluted or pale yellow, hold off on taking a test. Diluted urine tends to also have diluted hCG levels which can skew the test results.
What causes a pregnancy test to be wrong?
1. Expired pregnancy test. “Pregnancy tests expire, which can result in a false-negative test. Heat or moisture can cause damage to the test window on a pregnancy test and this can also result in inaccurate results.
What should you not do when taking a pregnancy test?
It is best to avoid drinking anything in the morning and taking the pregnancy test. The early morning urine is darker in color because it is a concentrated sample. The level of hCG relatively will be higher in it.
Can my meds mess with my pregnancy test results?
Fertility meds aren’t the only drugs that could potentially mess with your test results. Other meds, too, can affect your hormone levels and potentially cause a pregnancy test to read positive by mistake. Some common culprits include:
What happens if you leave a pregnancy test’cooking’?
You might want to take your mind off the nervous wait, but don’t wander off and forget; leaving the test ‘cooking’ for too long can give a false positive result. The reason for this is due to the urine evaporating if left for too long; it can leave a faint line which can be mistaken as a positive test.