The timing to test for STDs after sex depends on the specific STD due to different window periods — the time between exposure and when the infection can be accurately detected by tests. Here are typical recommended timeframes for testing after unprotected sex:
- Chlamydia and Gonorrhea: Can often be detected 1 to 2 weeks after exposure.
- Syphilis: Usually detected after 3 weeks to 3 months.
- HIV: Detectable as early as 2 weeks but more reliably after 4 to 12 weeks.
- Hepatitis B: After about 3 to 6 weeks.
- Hepatitis C: From 4 to 12 weeks.
- Herpes: Detectable a few days after exposure via swab tests or a few months via blood tests.
- Trichomonas: Usually 1 to 2 weeks.
For the most accurate results, it is generally advised to test initially around 3 weeks after exposure and then again at 3 months for confirmation. Testing too soon may lead to false negatives because the infection might not be detectable yet. If symptoms appear (such as unusual discharge, pain during urination, or sores), testing should be done immediately. Regular testing is recommended for sexually active individuals, especially with new or multiple partners. This guidance applies regardless of symptoms, as many STDs can be asymptomatic but still transmissible and harmful if untreated.
