Sickle Cell Screening Test

This test detects if a red blood cell inappropriately changes into a sickle shape (crescent shape) after a blood sample is mixed with a chemical such as sodium metabisulphite that will reduce the amount of oxygen it carries. This test is used to screen for an abnormal type of hemoglobin called Hemoglobin S in blood. Hemoglobin is a protein that helps the red blood cell carry oxygen to all parts of the body. Haemoglobin S is characterized by carrying low oxygen to the body parts, reducing the lifespan of the RBC and hindering the smooth movement of the RBC through the blood vessels.