A simple HIV test design and easily interpretable, fast results are logistical advantages in clinical settings such as the labor and delivery unit. A fast test result means that a woman can make important choices about her and her baby's medical care before she delivers her baby. If a woman finds out she has HIV, she can decide to take antiretroviral drugs before delivery to decrease the risk of passing HIV to her baby. These advantages are also important for women with little or no prenatal care who present for care late in pregnancy, but may not be inclined to return for a standard test result or adhere to subsequent prenatal visits.