- Kidney function: BUN 8-20 mg/dl. Creatinine 0.8-1.2 mg/dl for males and 0.6-0.9 mg/dl for females. GFR normal results range from 90 - 120 mL/min/1.73 m2.) Participants will be on a stable ART regimen (i.e. no change in agents) with either suppressed HIV viral level or <50 viral level for at least 3 months.