Viral load testing is an essential factor in decision making regarding when to initiate or change antiretroviral (ARV) therapies in children, adolescents, and adults. The measurement of plasma viral load and of CD4 lymphocyte counts, along with a clinical assessment, can provide an accurate picture of HIV disease progression and response to ARV therapy. HIV guidelines recommend measurement of plasma viral load at baseline and every three to four months.

Formula: The number of patients/clients with at least one HIV primary care visit in the past 12 months who have also had a viral load test taken in the past 4 months. Divide by the total number of patients with at least one HIV primary care visit in the past 12 months. Multiply by 100 to calculate percent.

More than 90 percent of patients/clients will have a viral load test every 4 months.

At the end of each month (or at the frequency indicated by your improvement initiative), count the number of patients with at least one HIV primary care visit in the past 12 months who have had a viral load test in the past 4 months. Divide by the total number of patients/clients with at least one HIV primary care visit in the past 12 months. Multiply by 100 to calculate percent.

The National HIVQUAL Project’s Minimum Sample Table will help you determine the number of records to include in your sample. The Research Randomizer can generate a random number series to help you select which records to review.