Dear Doctor. Thank you so much everything you did. I am asian. I had HIV testing on 4week(PCR and ELIAS) and 8 week(PCR and ELIAS) and 10 week(PCR and ELIAS) and 82.5 day(ELIAS) from explosion event. Fortunately all of my result are negative. My doctor said it is conclusive result. But I had a lot of symptoms such as the common cold, diarrhea, a coating on the tongue and muscular pain since explosion event. Is it possible to turn positive from negative? Some people mentioned I have to test again 6 month and 12 month after explosion event. I am so scared.