TABLE 7.
Quantification of the second international WHO standard HCV RNAa
| Nominal input concn (IU/ml [log10]) of WHO standard | RealTime HCV
|
CAP/CTM
|
||||
|---|---|---|---|---|---|---|
| Mean (range) concn
|
Mean difference from WHO standard | Mean (range) concn
|
Mean difference from WHO standard | |||
| IU/ml | log10 transformed | IU/ml | log10 transformed | |||
| 1,500 (3.2) | 920 (674-1,102) | 3.0 (2.8-3.0) | −0.2 | 3,064 (2,857-3,096) | 3.5 (3.5-3.5) | 0.3 |
| 25,000 (4.4) | 13,558 (8,997-16,102) | 4.1 (4.0-4.2) | −0.3 | 43,489 (22,085-69,852) | 4.6 (4.3-4.8) | 0.2 |
a
The second international WHO standard HCV RNA is code 96/798.