HGT monitoring is a way to test blood glucose levels by pricking the finger to draw blood onto a test strip. It is important for managing diabetes. The objectives are to determine blood sugar levels, prevent complications like hyperglycemia and hypoglycemia, and know the appropriate glucose level. Diabetes mellitus is a metabolic disorder resulting in high blood sugar due to hormonal changes. Proper preparation, technique, and care of equipment are needed to accurately monitor glucose levels. New non-invasive methods are being developed but finger pricks remain the standard method.