A 23-year-old male asked:
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would a negative syphilis blood test be reliable at 5 weeks past possible exposure?

1 doctor answer
Dr. Hunter Handsfield
52 years experience Infectious Disease
Close but not quite: Six weeks would be 100% reliable. Five weeks probably is conclusvie, but 6 weeks would be 100% conclusive.
Answered on Feb 26, 2018
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