RBCs count

There are two methods for counting RBCs; 1) Automated method through the electronic blood cells counter. 2) Manual method using the hemocytometer. Electronic counter is more accurate than the hemocytometer method. The electronic counter is expensive, needs periodical maintenance. Maintenance of blood counter is very important; failure to do that will result in misleading results. … Read more

The significance of blood film examination

1. Identification of different animal species. 2. Morphological examination of the erythrocytes and leucocytes. 3. Carrying out DLC. 4. Diagnosis of some types of leukaemia. 5. Diagnosis of blood parasites infections either intercellular or intracellular. 6. Diagnosis of bacterial diseases, during bacteraemia. 7. Prognosis of disease through estimating the count of band cells or hypersegmented … Read more

Polycythemia

Prof. Mahmoud Rushdi (Assiut University-Egypt) Definition Polycythemia is the increase of RBCs count above the normal upper limit specific for each animal species. There are two types of polycythemia, which are relative and absolute polycythemia. Relative polycythemia is defined as the relative increase of RBCs count due to loss of fluids from the body. The … Read more

Mean Corpuscular Values

Three values are calculated mathematically and used mainly to measure the average size of the RBC, average hemoglobin weight and percent of hemoglobin per individual erythrocyte. The mean corpuscular values are: – Mean corpuscular volume (MCV), MCV is obtained by dividing the value of packed cells volume (PCV) on the RBCs count, and then multiply … Read more