FALSE HIV RESULTS

A physician called about HIV screening for a 38-year-old man who wanted to be tested because he was getting married and had a history of injection drug use. He had been sober for 2 years at the time of the screening test. The patient had initially had a 4th generation HIV test that was repeatedly reactive but the Western Blot (WB) was indeterminate. The physician did not have information about which WB bands were reactive. The patient then went to Planned Parenthood with a buccal swab, with negative results. A repeat 4th generation test was done at the physician’s clinic approximately 6 weeks later. Once again the test was positive, repetitively reactive ELISA results, and an inconclusive Western Blot test. The patient’s viral load was checked and was negative (VL<20). The patient’s partner had also been sober for 2 years and had negative HIV screening tests multiple times as well. Given this patient’s risk history, how should these test results be interpreted?