A false positive pregnancy test result is uncommon, but it can happen. Learn how things like medications and medical conditions can cause a false positive result.

“A true false positive pregnancy test is uncommon; more often a positive result followed by a negative test is due to a chemical pregnancy,” explains Dr. Bishop.

"Although both true and false-positive test results were infrequent, most isolated positive RNA test results were false positives," he said.

False-positive mammography results are linked to an increased risk of future breast cancer. But many people who get a false-positive don't return for screenings.

Mammogram results that are false-positive may discourage women from returning for a future follow-up screening for breast cancer.

High rates of false-positive test results may be keeping women from sticking to recommended mammogram screenings for breast cancer, a new study has found. Experts weigh in.

A case of false-positive alcohol toxicology tests believed to be linked to treatment with sodium-glucose cotransporter 2 (SGLT2) inhibitors raises concern that the widely used diabetes drugs could ...

PHILADELPHIA — Patients with a false-positive Shield test result did not appear to be at increased risk for non-colorectal cancer malignancies at 1 year compared with those with a true-negative ...

RELATED: Americans can order free COVID-19 tests: What to know False positive on expired COVID test If a COVID at-home antigen test is expired, it is possible to get an inaccurate result.

False positive test results for occult blood in the urine are relatively common (22%) with dipstick testing. To be a true false positive, a microscopy test must also be negative.