I was frequntly donate my blood for last few years. I did donation in Aug 2016 then Dec 2016 and got a call from blood bank that there is a positive result for VDRL. but I didn't go for test as there was no sign of disease, but i got VDRL positive in my medical report (without Titre as it was on card test) and got 1 shot of PC 2.4 M unit after 3 month again it was positive on card test doctor ordered me to go for TPHA test and there was positive result of TPHA with 1:2560.
again I got 1 shot of Penicillin 2.4 and some Azithromycine 500mg (10 tebs) then i went to a doctor for appropriate treatment and got 14 Ceftraxiaon IV and thereafter Doxcycilline 100 Mg 2 Tab/day for 10 days.
then again i went for VDRL titre test and RPR test is still 1:2.
what should i do to get it negative
You have had enough treatment. These tests can remain positive for months to years after successful treatment. There is nothing further to do.