O.D. RATIO IN LAB RESULT

Question

MY BEST FRIEND TESTED POSITIVE FOR HIV-1 TWO WEEKS AGO. HE IS WAITING FOR THE RESULTS ON THE CD4 COUNT AND VIRAL LOAD. HIS REGULAR BLOOD TEST RESULTS SHOWS AN "O.D." RATIO OF 7.21 (THE NORMAL RATIO IS <1.00. UNDER THE FIGURE, THE DESCRIPTION OF THE O.D. RATIO READS: "ANTIBODY LEVEL RELATIVE TO NEGATIVE CUTOFF" WHAT DOES THIS MEAN? 7.21 IS MARKED AS A HIGH RATIO. THANK YOU FOR YOUR HELP.

Answer

It means the test is positive.