TABLE 1.

Parameters used to genotype unknown HCV specimens^a

Retention time (min) for the following amplicon:		Genotype
153 bp	45 bp
<3.5b	<5.0	2b
3.5-4.5	>5.3	3a
4.2-4.5c	<5.0	2a
4.4-5	5.0-5.3	1a
>4.5	5.0-5.3	1b
>4.7	>5.3	4

^aParameters are described for each amplicon separately but must both be present in the same sample for the sample to be allocated into a specific genotype.

^bThe trace usually has a high absorbance and a shoulder.

^cThe trace sometimes has a sharp spike associated with the trailing edge of the peak.