Bartley Ranch showcases several historic Nevada ranch houses. Come see them!
Bartley Ranch showcases several historic Nevada ranch houses.  Come see them!

What is the "window period" for HIV?
It can take up to 3 months after HIV infection for enough antibodies to develop, therefore a negative test result is reliable only if the person has not had any sexual or needle-sharing risk behavior (or other exposure to infectious body fluids) during the 3 months prior to testing. Some people with recent risk behavior will test HIV antibody negative, yet may have actually been infected during the previous 3 months. Every exposure pushes the window period out another months.