"In April and May 2015, a test to measure prostate-specific antigen, or PSA, failed quality-control checks 22% of the time. The PSA test is used to help detect

"In April and May 2015, a test to measure prostate-specific antigen, or PSA, failed quality-control checks 22% of the time. The PSA test is used to help detect prostate cancer." Ouch.... I see a string of class action suits in the future.