Fig. 2: Total hemoglobin and erythrocyte counts as a function of age.
From: Macrocytic anemia in Lesch–Nyhan disease and its variants

(a–d) Hemoglobin (a and b) and erythrocyte (red blood cell (RBC)) counts (c and d) for subjects with Lesch–Nyhan disease (a and c) and hypoxanthine-guanine-phosphoribosyltransferase-related neurological dysfunction (b and d). Each circle represents an individual complete blood count result. Circles connected with a line indicate multiple values for the same patient. Age-adjusted normal values for hemoglobin and RBC counts are shown as dotted lines at the third, fiftieth, and ninety-seventh percentiles.