Table I. EIA of the antibodies that react with the truncated F protein^a.

Patient no.	Before seroconversionb	After seroconversionb	Genotype
1		0.523c	1a
2		0.499c	1a
3		0.139c	4
4		0.043	6a
5	0.009	0.014	3a
6	0.024	0.555c	2b/3
7	0.020	0.012	2b
8	0.038	0.167c	1b
NC		0.036
NC		0.019

^aPatients 1–8 were determined to be HCV positive based on the Chiron c22 assay. NC indicates the negative control serum samples.

^bDetails of the serological assay are described in Materials and methods. The OD was read at 492 nm. The serum samples of patients 5–8 collected prior to seroconversion were also tested.

^cThese samples have a P/N ratio of >3 and are considered positive for the antibodies that react with the F protein.