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. If you're taking a pregnancy test, ...

Add Yahoo as a preferred source to see more of our stories on Google. While experts are sympathetic to the stress false positives can cause, they're urging women to keep going to annual screenings, ...

A significant number of women stop getting regular mammograms after being frightened by a "false positive" scan that incorrectly suggests they have breast cancer, a new study finds. About 77% of women ...

Medically reviewed by Kiarra King, M.D. Key Points Expecting twins can rarely cause a false negative pregnancy test due to something called the "hook effect."It's best to test after a missed period ...

Swedish women with prior false-positive mammograms, particularly those aged 60 to 75 with prior biopsies and low density, show elevated breast cancer risk, necessitating closer monitoring and better ...

Can levalbuterol (Xopenex) cause urine to test positive for amphetamines? —William L. Powell, Orland, Calif. Drug screens falsely positive for amphetamines have been associated with use of the Vicks ...