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. 2000 Aug;2(3):158–166. doi: 10.1016/S1525-1578(10)60632-0

Table 2.

Precision of the TaqMan HCV Test

Variable Input IU/ml
4000 80,000 1,600,000
Total number of replicates 60 60 60
Mean calculated RNA conc. (IU/mL) 3,101 98,199 3,010,026
Minimum value 1,325 46,611 1,127,390
Maximum value 5,600 155,064 4,644,024
Within-run
Standard deviation 926 18,087 511,429
Coefficient of variation 26.6% 18.4% 17.0%
Total
Standard deviation 941 22,928 649,456
Coefficient of variation 30.4% 23.4% 21.6%

These calculations was performed as described in the National Committee for Clinical Laboratory Standards guideline EP5-T2 for within-run and total precision. Total precision includes between-run (instrument) variation and between-day variation.