TABLE 2.
VA indicators and percentage total serum VA as REs categorized by total liver VA reserves1
| Deficient (<0.1 μmol VA/g) | Optimal (≥0.1 to <0.7 μmol VA/g) | High (≥0.7 to <1 μmol VA/g) | Hypervitaminotic (≥1.0 μmol VA/g) | |
|---|---|---|---|---|
| n | 6 | 11 | 1 | 9 |
| Total liver VA reserves, µmol/g | 0.04 ± 0.032 | 0.28 ± 0.14 | 0.77 | 1.85 ± 0.96 |
| Serum retinol, µmol/L | 0.61 ± 0.68 | 1.26 ± 0.85 | 2.77 | 1.17 ± 0.64 |
| Serum REs, nmol/L | 2.27 ± 4.09 | 18.0 ± 14.4 | 24.8 | 33.2 ± 35.0 |
| Total serum VA | ||||
| As REs, % | 0.90 | 1.75 | 0.89 | 3.31 |
| As REs >5%, n | 1 | 0 | 0 | 2 |
| As REs >7.5%, n | 0 | 0 | 0 | 2 |
| As REs >10%, n | 0 | 0 | 0 | 0 |
1Categories for total liver VA reserves, as defined by reference 1. RE, retinyl ester; VA, vitamin A.
2Mean ± SD (all such values); the “High” category had only one subject and therefore does not have an SD.