Is an STI test useful for fertility? Medically, yes, but indirectly. Untreated STIs like chlamydia and gonorrhea can cause tubal scarring in women and epididymitis in men, impairing fertility. However, an STI test is not a fertility test per se—it only detects infections that, if left untreated, may harm reproductive health. For a full fertility workup, hormone panels, semen analysis, and gynecological exams are required. The evidence linking STIs to infertility is strong (human clinical studies), but the test alone does not assess fertility. A negative STI test does not rule out other causes of infertility. Thus, while useful as a screening tool before trying to conceive, its direct utility for fertility is limited. Marketing often overstates the connection. Safety note: If positive, treat the infection before attempting pregnancy.
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