Anion gap — lab reference
In the reference guideFormula and albumin correction vary by laboratory. Ask your clinician to confirm whether potassium is included.
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What’s searchable?Formula and albumin correction vary by laboratory. Ask your clinician to confirm whether potassium is included.
Ask your clinician to read this result with sodium, bicarbonate, and anion gap.
Measured and calculated values may differ. Ask your clinician to review osmolal gap when indicated.
Your lab may use its own range. Symptoms, medicines, and the types of white blood cells also matter.
Altitude, smoking, hydration, androgen therapy, and pregnancy may shift values.
Ask your clinician to consider altitude and iron/B12/folate status. Pregnancy requires trimester-specific ranges.
Hydration and altitude are major modifiers. Ask your clinician to review alongside hemoglobin and RBC indices.
Macrocytosis and microcytosis require cause-specific interpretation.
The test method matters. Ask your clinician to review with MCV and MCHC.
Analyzer-specific; hemolysis and cold agglutinins may interfere.
Useful with MCV for mixed nutrient deficiencies and evolving anemia.
Local analyzer range governs. Ask your clinician to review trends and collection artifacts.
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