Table 3 The precision, recovery, and matrix effect of EtG, EtS in blood.
From: Estimating the time of last drinking from blood ethyl glucuronide and ethyl sulphate concentrations
Analyte | Concentration (µg/mL) | Intra-precision (%) | Inter-precision (%) | Recovery (%) | Matrix effect (%) |
|---|---|---|---|---|---|
EtG | 0.05 | 5.2 | 4.8 | 70.1 | 15.4 |
0.5 | 4.8 | 2.4 | 66.9 | 11.5 | |
5.0 | 4.7 | 2.0 | 66.1 | 11.9 | |
EtS | 0.05 | 4.0 | 5.7 | 85.1 | 3.9 |
0.5 | 4.7 | 2.0 | 82.0 | 1.0 | |
5.0 | 2.5 | 6.1 | 88.6 | 0.9 |
