Compound
Concentration
(ng/mL)
Extracted plasma (ng/mL) N=6
Extracted urine (ng/mL) N=6
Standard in acetonitrile (ng/mL) N=6
Testosterone
0.25 (LLOQ)
0.248
0.241
0.250
1
0.977
0.952
0.957
2
2.019
2.005
2.053
8
8.089
8.129
8.455
Epitestosterone
1
1.002
1.094
0.992
2
2.051
1.961
1.977
8
8.038
8.122
8.110
Table 4:
Matrix effect of plasma and urine on spiked testosterone and epitestosterone compared with standard concentrations in acetonitrile.
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