Nothing bad: It's not harmful. In fact, it can sometimes increase the sensitivity of the second test (the "booster effect").
Answered 12/30/2013
4.6k views
A doctor has provided 1 answer
A doctor has provided 1 answer
90,000 U.S. doctors in 147 specialties are here to answer your questions or offer you advice, prescriptions, and more.
Ask your question