Table 2.
Results from EQA samples (Mycophenolate – International Proficiency Testing Scheme, Target Values for “Others”) – M46A/B to M76A/B.
| IQC levels | n | Mean (mg/L) |
Mean bias (mg/L) | Standard deviation of the mean bias (mg/L) | ||
|---|---|---|---|---|---|---|
| Participant | Peer grp. | |||||
| <2.5 mg/L | 16 | 1.84 | 1.81 | 0.03 | 0.16 | |
| Nature: target | 4 | 2.25 | 2.13 | 0.12 | 0.1 | |
| Nature: pool | 12 | 1.70 | 1.71 | −0.01 | 0.16 | |
| 2.5–10 mg/L | 30 | 4.91 | 4.77 | 0.14 | 0.25 | |
| Nature: target | 25 | 5.25 | 5.11 | 0.14 | 0.26 | |
| Nature: pool | 5 | 3.22 | 3.08 | 0.14 | 0.25 | |
| >10 mg/L | 12 | 12.48 | 12.10 | 0.38 | 0.54 | |
| Nature: target | 12 | |||||
Mean bias and Standard deviation of the mean bias were calculated according to the SH GTA 14, the technical guide for the UM estimation, published by COFRAC (the French accreditation body) in 2011. Ref. [24]