[Evaluation of globular osmotic resistance (GOR) and of the lysis test with glycerol (GLT/50) in the screening of heterozygous thalassemia].

A rapid and simple procedure measuring the rate of hemolysis of 50% of erytrocytes suspended in a standardized glycerol mixture (GLT/50) has been compared with the erytrocyte osmotic fragility to NaCl 0.375% concentration, carried out according to Parpat's method modified, in order to estimate the respective behaviour in the screening of beta-thalassemia trait. The GLT/50 is provided with more selectivity especially between beta-thalassemia trait carriers and other subjects with iron deficiency anemia.