HIV testing, also called HIV screening, is the only way to know if you have the virus. Several types of tests check your blood or other body fluids to see whether you're infected. Most can't spot HIV ...

Around 1.2 million people in the U.S. have human immunodeficiency virus (HIV) – and more than 150,000 of them don't know it. In fact, as many as 90% of new HIV infections every year are transmitted by ...