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History of syphilis
in the past? Sometimes this could be from an old infection that was treated, though I think Possibility of old infection or Lab result is False positive.
I advice you to repeat the VDRL
and TPHA for your personal use not for showing to medical exam.
If it were me, I'd re-test and probably treat to be safe.
I Hope I Provided Useful Information. Do ask Furthur Questions to help You get well soon.
Dr.J.Kingson John David