What is the normal range for the anion gap in mEq/L?

The normal range for the anion gap is typically considered to be between 4-12 mEq/L. This value is crucial in clinical practice as it helps to identify the cause of metabolic acidosis by determining whether the acidosis is due to a gain in fixed acids or a loss of bicarbonate. The anion gap is calculated using the concentrations of sodium, chloride, and bicarbonate in the blood, and it reflects the balance of cations and anions.

An anion gap that falls within the 4-12 mEq/L range indicates a normal metabolic state. Values below or above this range may suggest different pathological conditions, such as diabetic ketoacidosis, lactic acidosis, or renal failure when elevated. Understanding this range is essential for healthcare professionals when assessing electrolyte imbalances and metabolic disorders.