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Spike recovery and relative standard deviation (RSD, n = 3).
| Analyte | Recovery (%) | RSD (%) | Recovery (%) | RSD (%) |
|---|---|---|---|---|
| Spike level of 100 ng/mL | Spike level of 500 ng/mL | |||
| GSH | 115 | 5 | 103 | 1 |
| Spike level of 4 ng/mL | Spike level of 100 ng/mL | |||
| Cys-Gly | 97 | 9 | 105 | 4 |
| Glu-Cys | 95 | 3 | 103 | 2 |
| Met | 88 | 3 | 100 | 4 |
| Cys | 92 | 12 | 105 | 2 |
| GSSG | 126 | 7 | 124 | 4 |
| Hcys | 105 | 1 | 113 | 2 |
