[Interference of hemolysis in plasma urea determination. A comparison of 2 methods: classical Berthelot urease and the modified Berthelot urease].

The authors have tested the interference of the hemoglobin by two routine methods ( Berthelot classic and Berthelot modified) for the determination of plasmatic urea. From their work it appears that Berthelot classic method already presents a very sensible positive interference for hemoglobin at 0.04 g/dl level while for the Berthelot modified method such interference begins to be significant only for those values which are than 1.

[Determination of the diagnostic value of erythrocyte discrimination indices (Mentzer and Srivastava) and of glycerol lysis time (GLT 50) in microcytosis].

Many authors proposed erythrocytes discriminating functions to differentiate most common microcythemic hypochromic anemias (beta-thalassemia and iron deficiency). This study considers two of these discriminating functions: 1. Mentzer's index; 2.