Electrolytes (Na/K/Cl): What It Detects, Normal Range

Overview

The Electrolytes (Na/K/Cl), Serum test measures the levels of three essential electrolytes—sodium, potassium, and chloride—in the blood. These minerals play a critical role in maintaining fluid balance, regulating blood pressure, supporting nerve signaling, enabling muscle function, and maintaining the body's acid-base balance. Abnormal electrolyte levels may result from dehydration, kidney disease, heart conditions, hormonal imbalances, excessive fluid loss, or certain medications. This test is commonly used in routine health checkups, emergency care, and the monitoring of kidney, heart, and metabolic disorders.

What It Measures

Why Take This Test?

• This test measures the concentration of the following electrolytes in blood serum: Sodium (Na): Helps regulate fluid balance
• blood pressure
• and nerve function. Potassium (K): Supports muscle contractions
• heart rhythm
• and nerve signaling. Chloride (Cl): Helps maintain fluid balance and acid-base (pH) balance.

How to Prepare

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Description

Measures sodium (Na), potassium (K), and chloride (Cl) levels in the blood to assess electrolyte balance, hydration status, and kidney function.