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Serum Anion Gap & Albumin Corrected Calculator (Figge-Kellum)

Internal medicine and critical care audit. Serum albumin correction of Anion Gap (Figge-Kellum formula) prevents false-negative high anion gap metabolic acidosis diagnosis in critically ill or malnourished patients.

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Formula: Standard Anion Gap = Na+ - (Cl- + HCO3-). Normal Range = 8 to 12 mEq/L. Albumin Correction (Figge-Kellum): Corrected AG = Observed AG + 2.5 × (4.0 - Albumin_g/dL).

In-Depth Guide & Mathematical Methodology

🧪 High Anion Gap Metabolic Acidosis (MUDPILES / GOLD MARK)

Causes of High AG (> 12 mEq/L): Diabetic Ketoacidosis (DKA), Lactic Acidosis (Sepsis/Shock), Acute Renal Failure, Toxic Ingestion (Methanol, Ethylene Glycol, Salicylates).

Albumin Effect: Albumin represents the primary unmeasured plasma anion. A 1 g/dL drop in serum albumin lowers observed AG by ~2.5 mEq/L.

Frequently Asked Questions (FAQ)

What is the Serum Anion Gap & Albumin Corrected Calculator (Figge-Kellum) and how does it work?

Internal medicine and critical care audit. Serum albumin correction of Anion Gap (Figge-Kellum formula) prevents false-negative high anion gap metabolic acidosis diagnosis in critically ill or malnourished patients.

How do I use this Serum Anion Gap & Albumin Corrected Calculator (Figge-Kellum)?

Enter Serum Sodium (Na+ in mEq/L). Enter Serum Chloride (Cl- in mEq/L). Enter Serum Bicarbonate (HCO3- in mEq/L). Enter Serum Albumin in g/dL. View standard Anion Gap and Albumin-Corrected Anion Gap.

What mathematical formula is used in this calculation?

Standard Anion Gap = Na+ - (Cl- + HCO3-). Normal Range = 8 to 12 mEq/L. Albumin Correction (Figge-Kellum): Corrected AG = Observed AG + 2.5 × (4.0 - Albumin_g/dL).

Is the Serum Anion Gap & Albumin Corrected Calculator (Figge-Kellum) on FindCalculator free to use?

Yes, all 330+ interactive tools on FindCalculator.online are 100% free, run directly in your browser without registration, and do not store your private calculation data.

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