General clinical research is one of the most important diagnostic methods, which accurately reflects the reaction of the hematopoietic organs to the effect of various physiological and pathological factors. In many cases, it is of great importance in the diagnosis, and in diseases of the hematopoiesis system, he is given a leading role.
The concept of "general clinical study of blood" (a general blood test) includes determining the concentration of hemoglobin, counting the number of erythrocytes, color index, white blood cells, erythrocyte sedimentation rate (ESR) and leukocyte formula. In necessary cases, additionally determine the time of blood coagulation, the duration of bleeding, the number of reticulocytes and platelets. At present, most of the parameters are determined on automatic hematological analyzers, which allow simultaneous examination of 5 to 36 parameters, the main ones of which include hemoglobin concentration, hematocrit, erythrocyte count, MCV, mean hemoglobin concentration in erythrocyte, mean hemoglobin in erythrocyte, half-width of erythrocyte distribution by size, the number of platelets, the average platelet volume, the number of leukocytes.
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