Table 5 Matrix effect evaluation of SAX and 5-OH SAX (n = 3, sources = 6)
Analytes | Norminal concentration (ng/mL) | Analyte matrix effect (%) | IS normalization analyte matrix effect (%) | ||||
|---|---|---|---|---|---|---|---|
Mean | SD | RSD | Mean | SD | RSD | ||
SAX | 15 | 92.36 | 2.96 | 3.21 | 109.39 | 5.56 | 5.08 |
2000 | 84.26 | 1.50 | 1.78 | 100.42 | 4.33 | 4.31 | |
5-OH SAX | 3 | 86.61 | 3.32 | 3.83 | 104.00 | 5.34 | 5.13 |
400 | 85.01 | 3.60 | 4.23 | 102.12 | 4.13 | 4.04 | |