👉 Hypoglobulin is a type of red blood cell that contains hemoglobin, a protein that carries oxygen. It occurs in the body when the body needs more oxygen to function properly. Hemoglobin is responsible for carrying oxygen from the lungs to the rest of the body and from the cells to tissues. When there is an excess of hemoglobin in the blood, it can lead to hypoxia or low oxygen levels, which can cause symptoms such as shortness of breath, fatigue, and confusion