Total LDH and LDH isoenzyme distribution in the serum of normal children

Total LDH activity and LDH isoenzyme distribution were determined in sera of in normal children from 4 to 13 years old and compared to a control group of adult sera. It was found that in children the level of total LDH activity and the isoenzyme distribution did not differ significantly from that in adults. When the children were divided into age groups of one year, such differences could not be detected either. No sex-related differences were found. The relativity of the normal LDH isoenzyme distribution pattern is discussed