TABLE 1.

Comparison of the abilities of HIV-1 Ab testing, HIV-1 Ag testing, PCR, the HIV-1/HCV assay, and the HIV-1 discriminatory assay to detect HIV-1 in seroconversion panels

Seroconversion panel	Vendor	Day with the first positive result by:a
		HIV-1 Abb	HIV-1 Agb	PCRb	HIV-1/HCV assay	HIV-1 discriminatory assay
6240	BCP	28	23	16	16	16
6243	BCP	31	24	17	17	17
6244	BCP	33	28	25	22	22
6245	BCP	74	67	61	61	61
6248	BCP	25	18	14	11	11
SV-0211	NABI	14	1	1	1	1
SV-0281	NABI	34	8	6	6	6
SV-0321	NABI	12	8	1	1	1
SV-0331	NABI	20	13	6d	6	6
SV-0341	NABI	21	10	7d	7	1
SV-0361	NABI	16	9	1	1	1
SV-0371	NABI	22	17	17d	17	17
PRB916	BBI	30	15	9	0	9
PRB923	BBI	47	37	35	30	30
PRB926	BBI	27	7	2	0	0
PRB929	BBI	25	14	14	14	14
PRB931	BBI	28	15	15	9	9
PRB932	BBI	27	27	27	13	13
PRB943	BBI	14	7	5	5	5
PRB944	BBI	14	2	0	0	0
PRB945	BBI	13	13	0	0	0
PRB946	BBI	>11c	7	4	4	0
PRB947	BBI	9	9	0	0	0
PRB948	BBI	>23c	23	20	20	20
PRB949	BBI	>20c	18	6	6	6
PRB950	BBI	28	18	18	0	0

^aThe first donation date is designated 0 by BBI and BCP and 1 by NABI.\

^bHIV-1 Ab, HIV-1 Ag, and PCR results were taken from the package insert provided with each panel as described in Materials and Methods.\

^cDay of antibody detection is after that indicated, as these specimens did not seroconvert by this final donation date.\

^dPrior blood sampling was below the limit of quantitation.