Phosphoglucomutase types in blood and hair roots taken from post-transfusion subjects

Pre- and post-transfusion blood samples were collected from 22 subjects together with the corresponding plucked hair samples taken 2 days and 2 weeks after the transfusion. The phosphoglucomutase1 (PGM1) subphenotypes of blood and hair were determined by isoelectric focusing and the phenotypes confirmed by gel electrophoresis. Many of the post-transfusion blood samples showed an alteration in the PGM1 bands when compared with the pre-transfusion samples. However, the PGM1 types determined from the hair samples were identical to the corresponding pre-transfusion samples in all cases.