Diagnosis of STDs

There are different tests for different sexually transmitted diseases (STDs) and depend on the type of STD a person gets. Screening should be done first to detect the presence of STDs and STIs. Screening for HIV, hepatitis B, chlamydia and syphilis usually takes place at the first prenatal appointment for all pregnant women. HIV infection can be diagnosed by serologic tests that detect antibodies against HIV-1 and HIV-2 and virologic tests help to detect HIV antigens or ribonucleic acid (RNA).