What can cause a false positive for hCG in urine?

7 Reasons Your Pregnancy Test Gave A False-Positive You Had A Miscarriage or Abortion Recently. . Some Medications Can Trigger False-Positives. . Medical Conditions Are Sometimes to Blame. . Confusing Evaporation Lines. . User Error. . An Ectopic Pregnancy. . A Chemical Pregnancy. After an abortion or miscarriage, a home pregnancy test may produce a false-positive result, since the levels of hCG in the body may still be relatively high. Taking a home urine pregnancy test, following an abortion or miscarriage, can be another reason for a false-positive result. Analytical causes of false-positive or false-negative urine hCG tests include human or technical errors in the performance and/or interpretation of the test results. However, leukocyte interference is not currently listed as a cause of false-positive urine pregnancy tests.The hCG urine test is a qualitative test, which means that it will tell you whether or not it detects the hCG hormone in your urine. It’s not intended to reveal specific levels of the hormone. The presence of hCG in your urine is considered a positive sign of pregnancy. Are there risks involved with this test?A false positive pregnancy test refers to a test result that shows a person is pregnant when in reality they’re not. Pregnancy tests check the urine or blood for human chorionic gonadotropin (hCG), a hormone produced during pregnancy. If hCG is detected, it typically means that the person is pregnant—but that’s not always the case.Analytical causes of false-positive or false-negative urine hCG tests include human or technical errors in the performance and/or interpretation of the test results. However, leukocyte interference is not currently listed as a cause of false-positive urine pregnancy tests.



How common are false-positive hCG tests?

“False positive pregnancy tests are rare and occur less than 1 percent of the time,” confirms DuMontier. Generally speaking, there will be a contributing factor if you’re seeing a false positive pregnancy test. If not, you can assume the test you’ve used is faulty in some way.

Can you have hCG in your urine and not be pregnant?

Many people have very low levels of HCG in their blood and urine when they are not pregnant. HCG tests detect elevated levels. Some tests may not detect pregnancy until HCG has risen to a certain level. Tests that can detect lower levels of HCG may diagnose pregnancy earlier.

Can a hCG urine test be wrong?

Could a positive result be wrong? Although rare, it’s possible to get a positive result from a home pregnancy test when you’re not actually pregnant. This is known as a false-positive.

What causes hCG levels to rise if not pregnant?

Although the most common cause of an elevated HCG level in females is pregnancy, occasionally, a HCG-secreting tumor is suspected and other conditions such as gestational trophoblastic disease (GTD), nontrophoblastic neoplasms, or a pituitary source of HCG, must be considered.

What causes a false positive hCG test?

False-positive urine hCG results have also been reported in patients with nephrotic range proteinuria and those with tubo-ovarian abscess [1-3]. Analytical causes of false-positive or false-negative urine hCG tests include human or technical errors in the performance and/or interpretation of the test results.

Is hCG positive or negative in urine pregnancy test?

The qualitative urine human chorionic gonadotropin (hCG) showed positive result, however, the quantitative serum hCG had negative result. The negativ … False-positive urine pregnancy test in a woman with adenomysosis Am J Emerg Med. 2009 Oct;27(8):1019.e5-7.doi: 10.1016/j.ajem.2008.12.023. Epub 2009 Sep 22. Authors

What is a false positive urine pregnancy test?

False-positive Urine Pregnancy Test Due to Leukocyte Interference. In this examination, a concentration of 500 or more cells per µL gave a positive result, while the other dilutions tested negative. After centrifugation, all samples showed a consistently negative result.

Can leukocyte interference cause false positive pregnancy test?

False-positive Urine Pregnancy Test Due to Leukocyte Interference. Analytical causes of false-positive or false-negative urine hCG tests include human or technical errors in the performance and/or interpretation of the test results. However, leukocyte interference is not currently listed as a cause of false-positive urine pregnancy tests.

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