Hi, I recently did a STD/STI Test, my C TRACHOMATIS IGG reading was 4.8 but was interpreted as negative by the testing lab, my doctor said it’s under 21. My question is, what does the 4.8 reading mean? Does it mean that I had the infection at some time in the past for it to show 4.8? Like a past infection? Does the 4.8 mean that there is still traces in my blood? My doctor also never put me on any antibiotics and I have never taken anything before for a Chlamydia infection?