Endocrinology · Emergency Medicine
Effective Serum Osmolality (Tonicity) calculator
Enter the published formula inputs below to calculate and interpret this score.
Clinical inputs
mmol/L
Allowed range: 50–250 mmol/L
Quick picks
mg/dL
Allowed range: 0–3000 mg/dL
Quick picks
Result
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Clinical inputs
- Measured serum sodium (mmol/L)Accepted range: 50 to 250
- Serum glucose (mg/dL)Accepted range: 0 to 3000
Primary source
Kitabchi AE et al. Hyperglycemic crises in adult patients with diabetes. Diabetes Care. DOI: 10.2337/dc09-9032. PMID: 19564476. Scope: effective serum osmolality in adult hyperglycemic crises, excluding BUN because urea is an ineffective osmole. (2009)
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