Viral load data is collected from laboratory reports which are entered into the HIV/AIDS reporting system. The data is submitted directly to the central office from labs performing this testing statewide and from health care providers. Viral load is selected as the outcome measure based on its emphasis in the National HIV/AIDS Strategy. Regular viral load testing is a component of the standards of care and is used as the marker that the patient has received care. This measure is calculated as the proportion of individuals who have evidence of a viral load test during the calendar year out of the total number of persons known to be living with HIV as of the end of the calendar year.