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Suggested lower cutoffs of plasma zinc concentrations for assessing the risk of zinc deficiency, by age group, sex, and fasting status1
| Plasma zinc concentration, μg/dL |
|||
| Fasting status and time of day | Children <10 y | Females ≥10 y | Males ≥10 y |
| Morning, fasting | — | 70 | 74 |
| Morning, nonfasting | 65 | 66 | 70 |
| Afternoon | 57 | 59 | 61 |
