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The Electrolytes (Na/K/Cl/BIC) test measures four essential electrolytes — Sodium, Potassium, Chloride, and Bicarbonate — in your blood. The addition of Bicarbonate to the standard Na/K/Cl panel provides critical information about the body's acid-base balance, making this a more comprehensive metabolic assessment. Abnormalities can indicate kidney disease, respiratory conditions, hormonal disorders, or medication effects. No fasting required.
Key benefits of this package include:
What Does the Electrolytes Test (Sodium, Potassium, Chloride & Bicarbonate) Measure?
| Level / Result | Possible Interpretation |
|---|---|
| Low Bicarbonate (< 22 mEq/L — Metabolic Acidosis) | Diabetic ketoacidosis, kidney failure, lactic acidosis, diarrhoea, toxic ingestion |
| High Bicarbonate (> 29 mEq/L — Metabolic Alkalosis) | Prolonged vomiting, diuretic use, hyperaldosteronism, excessive antacid use |
| Normal Bicarbonate with abnormal Na/K/Cl | Electrolyte imbalance — cause assessed through other parameters and clinical context |
| High Anion Gap (> 12 mEq/L) | Metabolic acidosis with high anion gap — DKA, lactic acidosis, renal failure, toxin ingestion |
| Normal Anion Gap Acidosis | Bicarbonate loss — diarrhoea, renal tubular acidosis, Addison's disease |
Important Note: Electrolyte results must be interpreted together as a complete panel, alongside blood gas analysis, kidney function tests, glucose, and clinical history. Bicarbonate abnormalities — especially in the setting of metabolic acidosis — require urgent physician evaluation.
The Anion Gap: A Powerful Diagnostic Tool. The Anion Gap (Na - [Cl + HCO3]) is calculated automatically from this panel's results. A normal anion gap is 8–12 mEq/L. When metabolic acidosis is present (low bicarbonate), a high anion gap narrows the diagnosis to a specific set of causes: DKA, lactic acidosis, renal failure, aspirin toxicity, methanol/ethylene glycol poisoning. A normal gap points to GI bicarbonate loss or renal tubular dysfunction. This simple calculation from four numbers dramatically narrows the diagnostic differential.

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