[Erythrocyte reference values in a Coulter S-Plus STKR, in healthy adults living at 2,240 meters above sea level].

To determine reference values of red blood cell counts in a Coulter S-Plus STKR, we studied 122 males and 147 females selected from the hospital staff (physicians, chemists, nurses) and blood donors. Their ages ranged from 17 to 45 years. Iron and total iron binding capacity in serum, and Zn-protoporphyrin and folates in erythrocytes were measured to include only normal subjects without nutritional deficiencies.

[Obtaining a reference pattern of rabbit brain thromboplastin].

Thromboplastin is a tissue extract used in the prothrombin time test (PT) necessary for oral anticoagulant control. The interlaboratory variability of the results of the PT test with thromboplastins of different tissue types, besides differences due to reporting PT in seconds or percentage, indicate the need for a standardized reference thromboplastin in order to express PT results on a common scale. The aim of the present work is to encourage the laboratory hospital either singly or in regional groups, to produce a standardized thromboplastin for their own use, to insure the control of oral anticoagulant therapy.