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St Louis, MO
A 35-year-old male asked:

Can you have gen hsv1 and never test positive on hsv igg blood tests?....even after 6 months? what if positive pcr swab?can herpes zoster outbreak cause false positive pcr swab for hsv1? can acne pad treatment on lesions cause pcr false positive?

1 doctor answer2 doctors weighed in
Dr. Hunter Handsfield
Infectious Disease 53 years experience
Genital herpes HSV1: Up to 30% of people with HSV1 don't get positive blood tests, after 6 months or forever. If the swab test was positve, you have HSV1, no need for further blood tests. Herpes zoster does not interfere with HSV blood test or PCR. Acne pad makes no difference. The good news is that most people with genital herpes from HSV1 have few or no recurrences and don't transmit to partners. No big deal!

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Last updated Jan 8, 2019

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