Plasma lactate dehydrogenase in megaloblastic anaemia

Abstract
Raised plasma lactate dehydrogenase (LDH) values were found in 26 patients with marked megaloblastic anaemia due either to vitamin B12 or folic-acid deficiency or a combination of these factors. Minor megaloblastic changes were not usually accompanied by plasma LDH elevation. Serial LDH estimations were as valuable as serial reticulocyte counts in assessing the response to physiological doses of folic acid and therefore in deciding whether megaloblastic anaemia is partially or completely due to folic acid deficiency.
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