Thanks for your query.
False positive results are seen in many patients with Treponema pallidum
haemagglutination (TPHA) test.Certain patients were leprosy
also showed false positive TPHA
So it common that where reagin and TPHA tests are reactive in a person who has no history or clinical signs of syphilis
, the serum is sent for or referred for TPI and FTA-ABS testing.
‘Hope I have answered your query, I will be available to answer your follow up queries, “Wish you Good Health and trouble free speedy recovery”