How to Determine Erythrocyte Sedimentation Rate (ESR)? – Explained!
When an anti-coagulated blood is allowed to stand vertically, sedimentation of erythrocyte occurs. The rate, at which erythrocytes fall down, is known as erythrocyte sedimentation rate (ESR). Source Image:d1ieb9vw5zjdt6.cloudfront.net/Principle: ADVERTISEMENTS: Anti-coagulated blood is taken in a tube and kept undisturbed in vertical position in a rack. This will allow the sedimentation of erythrocytes. After a specific time, generally 1 hr., the level of red cell is noted. The distance travelled by erythrocytes in 1 hr. is called as Erythrocyte Sedimentation Rate (ESR).Methods:There are two different methods of determination of ESR:1. Westergren Method ADVERTISEMENTS: 2. Wintrobe Method Westergren Method: Requirements:1. Westergren Pipette2. Westergren Stand ADVERTISEMENTS: 3. AnticoagulantWestergren pipette is open at both the ends. It is 30 cm in length and 2.5 mm in diameter. The lower 20 cm are marked…