TABLE 3.

Investigations to be performed on blood from the source individual.

Infection/test	Laboratory test
HIV	4th-generation HIV ELISA (or qualitative HIV PCR in source < 2 years of age)
	HIV viral load‡
HBV	HBsAg
HCV	HCV Ab†
Syphilis	TP Ab/RPR

ELISA, enzyme-linked immunosorbent assay; HBV, hepatitis B virus; HBsAg, hepatitis B surface antigen; HCV, hepatitis C virus; HCV Ab, hepatitis C virus antibody; TP Ab, Treponema pallidum antibody; RPR, rapid plasma regain; PCR, polymerase chain reaction.

^†Only if high risk for HCV and HCV-antibody status is unknown.

^‡Not routine, but useful if available.