Lab & Electrolytes Calculators
Anion gap, corrected values, osmolality and related lab calculations.
12 calculators in this category
A-a Gradient
Difference between alveolar and arterial oxygen.
Anion Gap
Screens for high-anion-gap metabolic acidosis.
BUN/Creatinine Ratio
Screens for pre-renal vs intrinsic renal causes.
Calculated Serum Osmolality
Estimated serum osmolality from sodium, glucose, and BUN.
Corrected Calcium
Adjusts total serum calcium for a low albumin level.
Corrected Sodium (for Hyperglycemia)
Adjusts measured sodium for the dilutional effect of high blood glucose.
Estimated Average Glucose (eAG)
Converts HbA1c into an estimated average blood glucose.
Free Water Deficit
Estimated water deficit in hypernatremia.
LDL Cholesterol (Friedewald)
Estimated LDL cholesterol from a standard lipid panel.
Non-HDL Cholesterol
Total cholesterol minus HDL.
Osmolar Gap
Difference between measured and calculated osmolality.
Sodium Correction Rate (Adrogue-Madias)
Predicted change in serum sodium from IV fluid, to plan safe hyponatremia correction.
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About Lab & Electrolytes Calculators
Anion gap, corrected values, osmolality and related lab calculations. This category currently includes 12 published calculators, each using a referenced clinical formula with a clear result and interpretation. Browse the full list above, or return to all Medical Calculators.
