Tennessee ? Thousands of patients at a Veterans Affairs clinic in Tennessee may have been exposed to the infectious body fluids of other patients when they had colonoscopies in recent years, and now VA medical facilities all over the U.S. are reviewing their own procedures.

A spokesman at the Alvin C. York VA Medical Center in Murfreesboro, Tenn., said the clinic is offering free blood tests and medical care to all patients whose records show they had colonoscopies between April, 23, 2003 and Dec. 1, 2008.