Table 3.
Precisions, repeatability, accuracy, and stability data for the ten AAs in CSF.
| Amino acids | Precision | Repeatability RSD% (n = 6) | Accuracy | Stability | |||
|---|---|---|---|---|---|---|---|
| Intraday RSD% (n = 6) | Interday RSD% (n = 7) | Average recovery (n = 6) | Recovery RSD% | Three freeze-thaw stability RSD% (n = 6) | Short-term stability RSD% (n = 6) | ||
| Tryptophan | 2.07 | 1.98 | 4.16 | 81.27 | 2.70 | 2.19 | 4.16 |
| Tyrosine | 1.95 | 2.70 | 0.59 | 80.30 | 5.34 | 2.38 | 0.59 |
| Phenylalanine | 1.87 | 2.04 | 4.42 | 80.47 | 3.46 | 1.12 | 4.42 |
| Glutamate | 2.85 | 1.78 | 3.14 | 104.51 | 2.07 | 1.15 | 3.14 |
| Glutamine | 2.30 | 2.44 | 3.93 | 115.29 | 2.24 | 1.37 | 3.93 |
| Isoleucine | 2.80 | 2.39 | 7.99 | 113.33 | 2.63 | 1.81 | 1.79 |
| Leucine | 2.99 | 2.99 | 5.75 | 88.64 | 5.55 | 1.18 | 4.75 |
| Taurine | 0.87 | 2.45 | 3.96 | 87.25 | 2.18 | 1.59 | 3.96 |
| Valine | 2.47 | 1.75 | 7.86 | 94.77 | 3.17 | 2.19 | 5.86 |
| Alanine | 2.91 | 2.09 | 2.00 | 90.78 | 7.19 | 1.75 | 2.00 |