CPT® Code 84302

The CPT® Code 84302 refers to the measurement of sodium levels from a sample other than urine, blood, plasma, or serum. Sodium is a crucial positively charged electrolyte that plays a vital role in various physiological functions within the body. It works in conjunction with other electrolytes, including potassium, chloride, and carbon dioxide (CO2), to help regulate fluid balance and maintain proper acid-base equilibrium. This mineral is essential for normal metabolic processes, fluid levels, and vascular pressure. The measurement of sodium levels is important for screening and monitoring conditions such as hypernatremia, which is characterized by elevated blood sodium levels, and hyponatremia, which indicates low blood sodium levels. Additionally, sodium levels may be assessed to identify electrolyte imbalances that can occur due to various factors, including the use of certain medications like diuretics, which can disrupt normal electrolyte balance. The sodium measurement is typically performed using ion-selective electrode (ISE) methodology, a precise technique that allows for accurate determination of sodium concentration in the specified sample type.