2 doctors weighed in:

How accurate are IGG blood test for herpes for person never having an outbreak? Partner tested positive for hsv2.

2 doctors weighed in
Dr. Hunter Handsfield
Internal Medicine - Infectious Disease
1 doctor agrees

In brief: It depends...

The HSV IgG blood tests are good but not perfect.
With the most common test (HerpeSelect®), strong positive (HSV2 index 3.5 or more) is proof of infection, regardless of symptoms. Negative (under 0.9) also is conclusive. Index >1.1 is officially positive, but many results 1.1-3.5 are false. Other IgG tests less well studied. Such uncertainties are why HSV blood tests often are controversial.

In brief: It depends...

The HSV IgG blood tests are good but not perfect.
With the most common test (HerpeSelect®), strong positive (HSV2 index 3.5 or more) is proof of infection, regardless of symptoms. Negative (under 0.9) also is conclusive. Index >1.1 is officially positive, but many results 1.1-3.5 are false. Other IgG tests less well studied. Such uncertainties are why HSV blood tests often are controversial.
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