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Clinical Chemistry 27: 1453-1455, 1981;
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Clinical Chemistry, Vol 27, 1453-1455, Copyright © 1981 by American Association for Clinical Chemistry

Diagnosis of hemolytic disease by electrophoresis of erythrocyte lactate dehydrogenase isoenzymes on cellulose acetate or Agarose

F Van Lente, A Marchand and RS Galen

We determined the LD-1/LD-2 isoenzyme ratio in hemolysates of erythrocytes by electrophoresis on cellulose acetate and on agarose. A ratio exceeding 1.0 was found with the former but not the latter. Results were similar for in vitro models of hemolytic disorders. Using cellulose acetate electrophoresis, we determined the predictive value of data on total LD activity and of the LD-1/LD-2 ratio in diagnosis of hemolytic disease in 100 patients. The sensitivity of the "flipped" LD- 1/LD-2 ratio was only 58%, the specificity was 93%, and the predictive value was 74% for diagnosis of hemolytic disease. A normal total LD activity is highly predictive (92%) for ruling at the presence of hemolytic disease.


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R. P. Rother, L. Bell, P. Hillmen, and M. T. Gladwin
The Clinical Sequelae of Intravascular Hemolysis and Extracellular Plasma Hemoglobin: A Novel Mechanism of Human Disease
JAMA, April 6, 2005; 293(13): 1653 - 1662.
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Copyright © 1981 by the American Association for Clinical Chemistry.