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Cortisol concentration results obtained for hair samples divided into two aliquots, prepared either with methanol extraction of the hair, or with the digestion protocol Standard deviation is provided in brackets
| Sample | Methanol extraction [pg/mg hair] | Enzymatic digestion [pg/mg hair] | Ratio (%) methanol/enzymatic digestion |
|---|---|---|---|
| 1 | 2.40 | 3.36 | 71% |
| 2 | 4.15 | 5.06 | 82% |
| 3 | 4.27 | 5.03 | 85% |
| 4 | 4.40 | 4.94 | 89% |
| 5 | 4.73 | 5.86 | 81% |
| 6 | 4.76 | 5.79 | 82% |
| 7 | 12.71 | 19.13 | 66% |
| 8 | 44.31 | 50.45 | 88% |
| Mean (SD) | 81% (8%) |
