CDC Herpes Testing Guidelines: What They Recommend and Why

The CDC's herpes testing guidelines are frequently misunderstood — and the actual recommendation is more restrictive than most people expect. The CDC does not recommend routine herpes IgG screening for asymptomatic adults in the general population; the reasons are the high false positive burden in low-prevalence populations, the psychological harm of a diagnosis without clinical context, and the low positive predictive value of low-index results; the CDC does recommend testing when symptoms suggest herpes infection, when a partner discloses HSV-2 status, or when herpes diagnosis would change clinical management.

What the CDC Actually Says

The CDC's 2021 STI Treatment Guidelines state: "The use of type-specific HSV serologic testing to screen for HSV infection is not recommended in asymptomatic adolescents and adults, including pregnant women and MSM." This is a deliberate, data-driven position — not an oversight. The CDC has actively considered and rejected routine population-level herpes screening, in contrast to its recommendations for chlamydia, gonorrhea, HIV, and syphilis where routine screening is recommended.

Why the CDC Doesn't Recommend Routine Herpes Screening

Several reasons underpin this guideline. False positive burden: type-specific HSV-2 IgG tests (particularly HerpeSelect) have a documented high false positive rate for low index values (1.1 to 3.5). In populations with low HSV-2 prevalence, positive predictive value falls substantially — many positive results are false positives. Psychological harm: a herpes diagnosis in an asymptomatic person carries significant psychological and social consequences, including anxiety, relationship disruption, and stigma. The CDC judged that these harms outweigh the benefits of identifying asymptomatic carriers in low-risk populations. Lack of clinical benefit: in asymptomatic individuals without known exposure, a positive result in the absence of symptoms doesn't change management in a well-defined way. Unlike gonorrhea (where treatment clears the infection), herpes management is nuanced and depends on clinical context.

When the CDC Does Recommend Herpes Testing

Active genital lesion or suspected herpes outbreak: HSV PCR swab from the lesion. This is the CDC's preferred diagnostic test for symptomatic cases — it is more sensitive than culture and more accurate than serology for active infection. Known exposure to a partner with herpes: type-specific IgG testing to determine serostatus, with appropriate counseling about the low positive predictive value of low index results. Recurrent genital symptoms without a diagnosis: PCR swab during an episode plus IgG serology. HIV-positive patients: herpes testing may be indicated as part of comprehensive STI management. Pregnancy: HSV serology in the context of a partner with known herpes may be appropriate to assess maternal risk of primary acquisition near term, with the associated high neonatal transmission risk.

The Clinical Nuance

The CDC guideline doesn't mean herpes testing is wrong to request or offer. It means that blanket population screening without clinical context is not supported by the evidence as beneficial. If you have specific reasons to be concerned about herpes — symptoms, partner disclosure, planned serodiscordant relationship — testing is clinically appropriate and should be done with proper pre-test and post-test counseling about index value interpretation.

For herpes PCR from active lesions or type-specific IgG testing, Health Test Express offers panels with results in 1 to 2 days.

Frequently Asked Questions

Should I get a herpes test at my annual STD checkup?

Not routinely, per CDC guidance, unless you have specific risk factors (known partner with herpes, recurrent undiagnosed genital symptoms, HIV positive). If you're concerned, discuss with your provider whether testing is clinically appropriate in your specific situation and understand that low-positive results require confirmatory testing.

Why don't STD clinics include herpes in standard panels?

Because the CDC doesn't recommend routine herpes IgG screening for asymptomatic individuals. Many clinics follow this guidance. You can request herpes IgG testing specifically, but it may not be automatically included.

If I have herpes symptoms, what test should I get?

A PCR swab from an active lesion is the most accurate test for an active outbreak. If you have no current lesion but want to know your lifetime herpes status, type-specific IgG is appropriate — with awareness of the index value interpretation issues.

Related: Herpes window period · False positive STD test · Herpes symptoms HSV-2 · Get tested today

This article is for informational purposes only and does not constitute medical advice.