Table 4.
Stabilities of G-Rh1, G-Rb1, G-Rc, and G-Rd under various storage conditions (n = 6).
| Analytes | Concentration (ng/mL) | Short term (24 h, room temperature) | Long term (15 days, −20°C) | Freeze-thaw (3 cycles) | Postpreparative (8 h, 4°C) | ||||
|---|---|---|---|---|---|---|---|---|---|
| RE (%) | RSD (%) | RE (%) | RSD (%) | RE (%) | RSD (%) | RE (%) | RSD (%) | ||
| G-Rh1 | 25 | 4.78 | 3.69 | −3.78 | 0.58 | 1.04 | 4.13 | 5.46 | 1.65 |
| 250 | −4.64 | 4.57 | −7.34 | 7.66 | 3.48 | 3.62 | 3.87 | 3.64 | |
| 2500 | 3.75 | 2.56 | 6.66 | 5.93 | 4.86 | 0.78 | 5.19 | 4.79 | |
|
| |||||||||
| G-Rb1 | 25 | 1.76 | 4.87 | 1.22 | 6.21 | 5.87 | 4.42 | 5.55 | 7.03 |
| 250 | −2.24 | 1.02 | 2.22 | 0.75 | −9.34 | 2.77 | 2.74 | 3.25 | |
| 2500 | 2.08 | 3.62 | −3.06 | 4.24 | 3.98 | 2.95 | −7.34 | 1.58 | |
|
| |||||||||
| G-Rc | 25 | −3.43 | 4.02 | 4.43 | 4.89 | −6.43 | 4.93 | −4.39 | 5.63 |
| 250 | −6.34 | 4.38 | 6.32 | 7.36 | −5.65 | 4.7 | 4.53 | 1.07 | |
| 2500 | 2.08 | 1.66 | 8.15 | 3.18 | 4.01 | 4.89 | 3.75 | 0.73 | |
|
| |||||||||
| G-Rd | 25 | 3.98 | 5.42 | 4.83 | 3.28 | 5.43 | 3.34 | −6.3 | 5.79 |
| 250 | −7.43 | 0.72 | −1.37 | 3.33 | −8.43 | 4.72 | 7.64 | 3.85 | |
| 2500 | −3.87 | 2.09 | 2.65 | 3.23 | −1.75 | 4.05 | 3.85 | 0.17 | |