TFRC and nutritional disorder: Furthermore, there was a high prevalence of iron deficiency (ferritin < 15 μg/L or serum iron < 8.9 μmol/L or sTfR > 8.3 mg/L) in 72.3%, as well as multiple micronutrient deficiencies, notably vitamins A (41.4%), B12 (85%), and D (64.8%), and folic acid (23.9%).