In this article we will discuss about the mechanisms and stages of blood clotting. Mechanism of Blood Clotting: Blood Clotting is one of three mechanisms that reduce the loss of blood from broken blood vessels. The three Mechanisms are: i. Vascular Spasm: The smooth muscle in blood vessel walls contracts immediately the blood vessel is broken. This response reduces blood [...]
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 [...]