Table 1.

Length of the window period for test reagents

	Length of window period (days)
	Estimate	Range
HIV
anti-HIV(EIA)	22*	6~38
HIV-NAT	11*
HCV
anti-HCV(EIA)	66†	38~94
HCV-NAT	10‡
HBV
HBsAg(EIA)	59§	37~87
HBsAg(CLIA)	45¶

*Data were obtained from Busch et al. [3].

†Data were obtained from Courouce et al. [6].

‡Data were obtained from Dodd et al. [7].

§Data were obtained from Mimms et al. [4].

¶Data were obtained from Comanor et al. [5].