The HIV testing window period ranges from 10 days to 3 months, depending on the test type used. Fourth-generation antigen/antibody tests can detect HIV as early as 18-45 days after exposure, while older antibody-only tests require 23-90 days. RNA tests, though expensive, can identify infection within 10-14 days. The window period exists because your body needs time to produce detectable levels of HIV antibodies or antigens after infection. During this time, you may test negative despite being infected and potentially contagious. For the most accurate results, healthcare providers recommend testing at 6 weeks and again at 3 months after potential exposure.
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This guide explains the differences between antibody tests, antigen/antibody tests, and RNA tests. Learn about accuracy rates, costs, and when each type is recommended.
Comprehensive overview of HIV prevention strategies including pre-exposure prophylaxis (PrEP) and post-exposure prophylaxis (PEP). Covers effectiveness rates and eligibility criteria for each prevention method.
Evidence-based information about how HIV is and isn't transmitted, with specific risk percentages for different activities. Addresses common misconceptions and provides factual transmission data.
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