👉 Sulphhemoglobin, also known as hemoglobin S or hemoglobin C, is a protein found in red blood cells that binds to iron and carries it into red blood cells. It plays an important role in transporting oxygen throughout the body. In humans, hemoglobin S is more specific than hemoglobin C and is therefore used for diagnostic purposes when there is a shortage of hemoglobin C. Hemoglobin S can be detected by staining a sample with a dye that binds to hemoglobin S but