Table 3.
Storage period | Storage stability (%) | |||||||
---|---|---|---|---|---|---|---|---|
NAD+ | NMN | |||||||
Mean | SD | %CV | n | Mean | SD | %CV | n2) | |
2 days | 123.7 | 23.8 | 19.3 | 9 | 52.1 | 20.4 | 39.1 | 9 |
1 week | 134.9 | 19.8 | 14.7 | 4 | 27.81) | NC | NC | 4 (2) |
2 weeks | 101.5 | 17.8 | 17.5 | 9 | NC | NC | NC | 9 (6) |
1 month | 64.4 | 5.9 | 9.1 | 9 | 65.7 | 34.1 | 51.8 | 9 (3) |
Lower limit of quantification: 0.5 to 2 μM (NAD+), 0.25 to 1 μM (NMN)
Storage stability (%) = concentration after storage / concentration before storage (day 0) × 100
NC not calculated, as the concentrations in most samples were BLQ
1)The average value of two samples was calculated because the concentrations in two of the four samples were below the limit of quantification (BLQ)
2)Numbers in parentheses represent the number of exclusions based on BLQ