WHTM-TV ( http://bit.ly/1byFyuT) says the faulty tests occurred between May 2012 and June 26, 2012. PinnacleHealth is blaming the false positive results on a chemical used in the tests that has since been recalled.
The tests in question were routine screenings meant to measure a man's prostate specific antigens, or PSA.
The tests resulted in elevated PSA numbers, and may have spurred men to have more expensive follow-up tests or other treatments.
The company is offering a repeat test at no cost to the affected men.
Information from: WHTM-TV, http://www.whtm.com