The term sickle cell disease (SCD) is a group of inherited red blood cell disorders. The symptoms of SCD have abnormal haemoglobin, called haemoglobin S or sickle haemoglobin, in their red blood cells. Haemoglobin is a protein in red blood cells that carries oxygen throughout the body and sickle cell is a lifelong disease. A sickle cell preparation is a screening test done on blood to identify the intensity of sickle cell disease.