STD Testing Window Calculator
Enter your possible exposure date to see the earliest reliable testing date for common STDs.
| Infection | Earliest test | Most reliable | Confirm negative by |
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Dates are estimates based on typical window periods. If you have symptoms (sores, discharge, pain, rash), see a provider right away rather than waiting for these dates.
This tool provides general educational estimates only and is not a medical diagnosis or a substitute for professional care. Window periods vary by individual, test type, and lab. If you were exposed to HIV in the last 72 hours, ask a provider about PEP immediately. Always confirm testing timing with a doctor or clinic.