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Serum Osmolality Calculator
Calculate estimated serum osmolality from basic metabolic panel
Clinical Guidelines: Calculated Serum Osmolality is determined by the formula: $(2 \times \text{Na}) + (\text{Glucose} / 18) + (\text{BUN} / 2.8)$. Normal range is typically $275\text{--}295\text{ mOsm/kg}$. Enter laboratory values below.
Laboratory Parameters Input
Calculation Results
⚠️ Not medical advice. For clinical pathology, nephrology, and medical reference only. Laboratory interpretation and fluid management must be supervised strictly by a qualified physician or nephrologist.