TABLE 2.

Between-run reproducibility of bDNA and RT-PCR for quantitation of HIV-1 RNA copies per milliliter at two concentrations^a

Sampleb	Method	Mean	SD	CV (%)
1	bDNA	297,066	72,205	24.3
	RT-PCR	780,826	267,937	34.3
2	bDNA	24,011	10,571	44.0
	RT-PCR	110,843	47,322	42.7

^aEach sample was tested in triplicate in six separate runs for a total of 18 replicates. 

^bSamples 1 and 2 were 1.5 × 10⁶- and 1.5 × 10⁷-fold dilutions, respectively, of an HIV-1 SF2 stock suspension quantitated at 2.48 × 10⁹ virus particles/ml.