Table 1.

Confirmatory test results in ten anti-hepatitis C virus (HCV) reactive health care workers

Sample no.	Anti-HCV EIA		Anti-HCV immunoblot	Immunoblot pattern (c100, c33, c22, NS5, SOD)	HCV-RNA PCR
	Initial S/CO	Repeat S/CO
1	59.80	51.32	Positive	4+, 4+, 4+, 4+, 0	Positive, 37,300 IU/mL
2	2.21	2.29	Invalid	0, 0, 0, 4+, 2+	Negative
3	2.65	2.28	Positive	0, 1+, 2+, 0, 0	Negative
4	1.39	1.47	Negative	0, 0, 0, 0, 0	Negative
5	1.11	1.12	Indeterminate	0, 1+, 0, 0, 0	Negative
6	1.24	1.09	Negative	0, 0, 0, 0, 0	Negative
7	2.95	1.04	Negative	0, 0, 0, 0, 0	Negative
8	1.21	1.02	Negative	0, 0, 0, 0, 0	Negative
9	1.18	1.02	Negative	0, 0, 0, 0, 0	Negative
10	1.37	1.01	Negative	0, 0, 0, 0, 0	Negative

C100, c33, c22 and NS5 = artificial HCV antigens

SOD = superoxide dismutase, fusion protein

S/CO = sample to cut-off ratio; positive if ≥1