For neonates at risk for HIV, what method provides early definitive information about infection?

For neonates at risk for HIV, what method provides early definitive information about infection?

• A. HIV antibody testing
• B. HIV-specific RNA detection
• C. HIV p24 antigen
• D. HIV DNA PCR

Answer: (B)

When evaluating newborns at risk for HIV, tests that detect the virus itself are needed because maternal antibodies in the infant can make antibody-based tests misleading. Detecting viral RNA in the infant’s blood shows active infection and does so very early, often before antibodies develop. HIV-specific RNA testing thus provides definitive information about infection sooner than antibody tests, allowing rapid diagnosis and prompt initiation of treatment. While DNA PCR can also identify early infection by detecting proviral DNA, the RNA-based approach is the most direct evidence of ongoing viral replication in the newborn and is particularly useful for early confirmation.

When evaluating newborns at risk for HIV, tests that detect the virus itself are needed because maternal antibodies in the infant can make antibody-based tests misleading. Detecting viral RNA in the infant’s blood shows active infection and does so very early, often before antibodies develop. HIV-specific RNA testing thus provides definitive information about infection sooner than antibody tests, allowing rapid diagnosis and prompt initiation of treatment. While DNA PCR can also identify early infection by detecting proviral DNA, the RNA-based approach is the most direct evidence of ongoing viral replication in the newborn and is particularly useful for early confirmation.