1 Departments of Pediatrics and Medical Genetics, University of Pennsylvania, Philadelphia, Pennsylvania
The recent report by Ng, et al. (Pediatrics, 39:293, 1967) was welcomed by us since it offered an explanation for the difference between our experience and theirs with the measurement of galactose-1-phosphate uridyl transferase (transferase) in the newborn by the UDPG consumption assay. We have found high normal or increased activity in newborn hemolysates by a modification of the UDPG consumption assay that we have employed.