Template:Osmolal Gap Calculator: Difference between revisions

Latest revision as of 16:50, 21 March 2026

Interactive Osmolal Gap calculator. Requires the calculator gadget. Usage: {{Osmolal Gap Calculator}}

Serum Osmolal Gap
Parameter	Value
Measured Serum Osmolality (mOsm/kg)
Sodium (Na⁺) mEq/L
BUN (mg/dL)
Glucose (mg/dL)
Results
Calculated Osmolality	mOsm/kg
Osmolal Gap	mOsm/kg

Interpretation
<10	Normal — No significant unmeasured osmoles detected.
>10	Elevated — Consider toxic alcohol ingestion: methanol, ethylene glycol, isopropanol, or other unmeasured osmoles (ethanol, mannitol, contrast dye).

References
Smithline N, Gardner KD Jr. Gaps—anionic and osmolal. JAMA. 1976;236(14):1594-1597. PMID 989116. Kraut JA, Xing SX. Approach to the evaluation of a patient with an increased serum osmolal gap and high-anion-gap metabolic acidosis. Am J Kidney Dis. 2011;58(3):480-484. PMID 21794966. Formula: Calculated Osm = 2(Na) + BUN/2.8 + Glucose/18. Gap = Measured − Calculated.

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 Usage: <code><nowiki>{{Osmolal Gap Calculator}}</nowiki></code>
 [[Category:Calculator templates]]</noinclude>
+=== Osmolal Gap ===
 <div class="calculator-container" data-calculator-refresh-on-load="true">
 {| class="wikitable" style="width:100%; border-collapse:collapse;"
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 |-
 | style="background:#e74c3c; color:white; text-align:center; font-weight:bold;" | >10
-| '''Elevated''' — Consider toxic alcohol ingestion: '''methanol, ethylene glycol, isopropanol,''' or other unmeasured osmoles (ethanol, mannitol, contrast dye).
+| '''Elevated''' — Consider [[Toxic alcohols|toxic alcohol]] ingestion: '''[[Methanol toxicity|methanol]], [[Ethylene glycol toxicity|ethylene glycol]], isopropanol,''' or other unmeasured osmoles (ethanol, mannitol, contrast dye).
 |}
 {| class="wikitable" style="width:100%; margin-top:4px; font-size:90%;"