In this article we will discuss about the determination of blood group. Blood type (also called blood group) is a classification of blood based on the presence or absence of inherited antigenic substances (antigens) on the surface of red blood cells. If the red blood cell had only "A" antigen on it, that blood was called type A. If the [...]
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 [...]
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 [...]