Is there a window period for testing for STDs?
Some STDs have a window period for testing. For instance, the window period for syphilis is 3 months. The newer blood antibody test for herpes, which is now available, also has a 3-month window period. The window period for hepatitis B is 2 months, but can be up to 6 months for hepatitis A. Less is known about window periods for other STDs, such as chlamydia and gonorrhea. For more information regarding the window period for testing of STDs, call the CDC National STD and AIDS hotline at 1-800-227-8922, Monday through Friday, 8 a.m. to 11 p.m. EST.