Laboratory Diagnostic Tests

   

LABORATORY DIAGNOSTIC TESTS

RED BLOOD PICTURE
Erythrocyte Counts
Hemoglobin Concentration
Hematocrit
Erythrocytes Indices
RETICULOCYTES COUNTS
LEUKOCYTES
Leukocyte Counts
DIFFERENTIAL LEUKOCYTE COUNT
Basic Data Determination
Basic Data Analysis
Methods Of Determination
MORPHOLOGICAL EXAMINATION OF BLOOD SMEARS
Blood Smear Preparation
Staining Methods
Cell Structure
THROMBOCYTES
Thrombocytes Count
Thrombocytes Indices
THICK DROP PREPARATION
REFERENCE VALUES OF HEMATOLOGY BLOOD PARAMETERS
 

LEUKOCYTE COUNTS

 


Only mature leukocytes can be found in the healthy people’s blood. In some diseases both mature cells and younger cells may pass into the peripheral blood.
Leukocytes counts in blood take between 3.4 x 109/L and 9.7 x 109/L. Values under 3 x 109/L present leukopenia, and over 10 x 109 /L leukocytosis.
Leukocytes can be determined in the sample of venous or capillary blood. It is recommended to determine leukocytes count in the venous blood.
The leukocytes count can be measured by a hemocytometer or by an electronic cell counter.
Leukocytes counts are performed on blood samples appropriately diluted with the Türck solution that lyses the erythrocytes and stained with gentian-violet dye that stains nuclei of all cells in the blood sample.
The principle of determination leukocytes counted by the hematology counters is the same as for erythrocytes.