Anion Gap Calculator
Calculate the serum anion gap to evaluate metabolic acidosis etiologies.
Input Parameters
Enter details for calculation.
Serum Anion Gap
Expert Tip
Normal range is 8-12 mEq/L (without potassium). High anion gap metabolic acidosis (HAGMA) suggests MUDPILES etiologies.
Calculation Methodology & Details
Formula
Evaluates the difference between measured cations and anions in blood serum.
Important Disclaimer
The calculations provided are for educational and general informational purposes only. They do not replace professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider.
How Anion Gap is Calculated
Follow these steps to use this calculator:
Enter Electrolyte Panel
Sodium, chloride, and bicarbonate levels.
Read Anion Gap
Normal is typically 8-12 mEq/L.
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ℹ️ About this Calculation
This nephrology and urology clinical calculator evaluates renal function, electrolyte/acid-base equilibrium, urinary excretion kinetics, and urologic disease risk according to KDIGO and AUA clinical practice guidelines.
Variable Glossary
Renal & Lab Metrics
Serum creatinine, urinary sodium/urea, albumin, PSA levels, or ultrasound kidney dimensions.
Diagnostic Indexes
eGFR (CKD-EPI equation), Fractional Excretion of Sodium (FENa %), serum anion gap, and PSA doubling kinetics.
How to Calculate Step-by-Step
Step 1
Enter serum electrolytes, creatinine, or urinary excretion lab values.
Step 2
Specify patient demographic parameters (age, gender, height/weight).
Step 3
View calculated clearance rates, CKD stage classification, or acute kidney injury (AKI) differentiation.