Stratification of qualified and nonqualified donors based on hormonogenic competence. (A) Pearson correlation of characterization endpoints at day 14 in the Tx-2 treatment group (N = 32). Values greater than 0 indicate a positive correlation, less than 0 a negative correlation, and 0 as no correlation. Correlation plots for (B) thyroglobulin and T4, (C) thyroglobulin and T3, (D) T4 and T3. The horizontal dashed line indicates the lower confidence limit for the parameter on the y-axis, the vertical dashed line indicates the lower confidence limit for the parameter on the x-axis. The red box distinguishes donors that meet qualification criteria (Table 3) for both plotted parameters.