From: Chromatographic method for estimation of vitamin E from dried blood spot sample
Stability study | QC samples | Vitamin E | |
---|---|---|---|
Mean area ratio of fresh sample ± SD (n = 5) | Mean area ratio of stability sample ± SD (n = 5) | ||
Short-term stability | LQC | 2.2726 ± 0.0020 | 2.254 ± 0.0015 |
HQC | 10.7822 ± 0.0023 | 10.7644 ± 0.0022 | |
Freeze thaw stability | LQC | 2.274 ± 0.0015 | 2.2068 ± 0.0076 |
HQC | 10.7812 ± 0.0043 | 10.7288 ± 0.0039 | |
Long-term stability | LQC | 2.2804 ± 0.0099 | 2.1984 ± 0.0110 |
HQC | 10.7806 ± 0.0060 | 10.6876 ± 0.0090 | |
Stock solution stability (at RT) | LQC | 2.284 ± 0.0069 | 2.277 ± 0.0079 |
HQC | 10.786 ± 0.0069 | 10.777 ± 0.0058 | |
Stock solution stability (at 2–8 °C) | LQC | 2.2836 ± 0.0089 | 2.2704 ± 0.0081 |
HQC | 10.7866 ± 0.0082 | 10.7702 ± 0.0023 |