STI Testing Frequency: How Often Should You Get Tested?

The recommended frequency for STI testing depends on your sexual activity, number of partners, and risk factors. Canadian public health guidelines provide clear direction. General recommendations include getting tested annually if you are sexually active with any new partner, every 3 to 6 months if you have multiple partners, after any unprotected sexual encounter with a new or unknown-status partner, and if you experience symptoms such as unusual discharge, sores, or pain. Specific populations may need more frequent testing. Men who have sex with men (MSM) are recommended to test every 3 months for HIV, syphilis, gonorrhea, and chlamydia. Individuals who inject drugs should test regularly for HIV and hepatitis C. Pregnant individuals are routinely screened for HIV, syphilis, hepatitis B, and chlamydia/gonorrhea. Window periods are important. Not all STIs are detectable immediately after exposure. HIV tests may take 2 to 12 weeks to become positive. Syphilis may take 3 to 6 weeks. Chlamydia and gonorrhea are usually detectable within 1 to 2 weeks. Your physician can recommend a testing schedule based on your individual risk profile. Testing is available through clinics, public health units, and telehealth-facilitated lab requisitions. *This article is for informational purposes only.*

This article is for informational purposes only and does not constitute medical advice. Content reviewed by licensed Canadian physicians. Last updated February 2026.