Fractional iron absorption and erythrocyte iron utilization in patients with tuberculosis (N = 18) before (baseline), after intensive antituberculosis treatment (8/12 weeks), and after completion of antituberculosis treatment (24 weeks). Box plots show the median and 25th and 75th percentiles with whiskers representing the highest and lowest values. Iron absorption and utilization at the different time points were compared by using LMM with repeated measures followed by Bonferroni correction for multiple comparisons.