Sugar Test, Glucose, Fasting, and Plasma in Laboratory InvestigationsIntroductionLaboratory investigations related to blood sugar are essential for diagnosing, monitoring, and managing metabolic disorders such as diabetes mellitus, hypoglycemia, and insulin resistance. Commonly used terms—sugar test, glucose, fasting, and plasma—are closely interconnected and form the basis of accurate biochemical assessment. Understanding these concepts helps healthcare professionals interpret laboratory results correctly and ensure proper patient care.Glucose: The Primary Blood SugarGlucose is a simple carbohydrate and the main source of energy for the body’s cells. It is derived from dietary carbohydrates and regulated by hormones, primarily insulin and glucagon. Normal glucose levels
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