Sodium (Na) analysis using Atomic Absorption Spectrophotometry (AAS) in flame and graphite furnace (GFA) mode is an important test used to measure sodium levels in biological samples, such as blood or urine. Sodium is an essential element that plays a vital role in maintaining fluid and electrolyte balance in the body, and it directly affects the functioning of the heart and muscles. This analysis is used to diagnose and monitor multiple health conditions, such as hypertension, fluid imbalances, and kidney failure. By accurately measuring sodium levels, healthcare professionals can determine whether adjustments to diet or medication are necessary, thereby enhancing comprehensive patient care.