It is necessary to determine haematocrit with 6 hours after the blood collection. Principle: Blood is centrifuged in sealed capillary tube and PCV is determined by a special haematocrit reader. Requirements: Haematocrit Centrifuge: 1. It runs at high speed and produces RCF of 12,000 X g and runs at a speed of about 15,000RPM. It contains a head to hold [...]
A well prepared blood smear is necessary for microscopic examination of blood. Blood smears are used to determine leukocyte differentials, to evaluate erythrocyte, platelet and leukocyte morphology, and, if necessary, to estimate platelet and leukocyte counts. Desirable qualities of a blood smear include: i. Sufficient reading area ii. Acceptable morphology within the working area iii. Even distribution of leukocytes Principle: [...]
In this article we will discuss about:- 1. Meaning and Purpose of Cross-Matching 2. Phases 3. Procedure. Meaning and Purpose of Cross-Matching: Before the recipient receives blood transfusion, a compatibility test must be run within the laboratory with the donor's red cells and the recipient's serum. This is called major cross matching. The primary purpose of major cross match is [...]