Sodium Corrected for Hyperglycemia
Corrects measured sodium for glucose-induced dilutional effect to reveal true sodium status
- Highest activation tier
- Recommended
- How it is scored
- Scored in code; a detected disagreeing draft value is flagged for correction
- Scoring type
- formula
- Care settings
- Any setting
Calculate
Answer every item. The result uses the same scoring code Scribeable runs in notes. Nothing you enter leaves this page.
90 to 200 mEq/L.
10 to 3000 mg/dL.
Enter the values above to see the result.
When it activates
Scribeable activates a calculator from the encounter. The Sodium Corrected for Hyperglycemia can activate when the transcript or pasted chart context documents any of these:
- Hyperglycemia with hyponatremia
- DKA sodium assessment
- HHS sodium correction
- Severe hyperglycemia with electrolyte abnormalities
A coded diagnosis can also activate it. ICD-10 prefixes carried by the registry: E11.0, E11.1, E13.1, E87.1.
Inputs the note needs
2 inputs. Each is resolved from the transcript, the pasted chart context and charted labs; at this calculator’s tier a missing input is never requested, and a missing required input keeps the score out of the draft.
| Input | Type | Unit / options | Guidance |
|---|---|---|---|
| Measured serum sodium in mEq/L | lab | mEq/L | |
| Serum glucose in mg/dL | lab | mg/dL |
Scoring
Corrected Na = Measured Na + 1.6 × ((glucose − 100) / 100) for glucose 100–400 mg/dL, plus 4.0 × ((glucose − 400) / 100) for glucose above 400 mg/dL (Hillier 1999: 1.6 worked well up to 400; 4.0 was better above).
Corrected Na = Measured serum sodium in mEq/L + 1.6 × ((min(Serum glucose in mg/dL, 400) − 100) / 100) + 4.0 × (max(Serum glucose in mg/dL − 400, 0) / 100)
Interpretation
If corrected Na is normal (135–145): hyponatremia is dilutional from hyperglycemia alone. If corrected Na remains low: true hyponatremia coexists. If corrected Na is elevated: hypernatremia masked by glucose-induced water shift — monitor closely during glucose correction.
Evidence
Sources carried in Scribeable's citation registry for this calculator; guideline version: Hillier 1999.
- Hillier TA et al. Hyponatremia: evaluating the correction factor for hyperglycemia (Corrected Sodium)Hillier et al. (Corrected Sodium) 1999 · 1999 · link last verified 2026-03-28
How Scribeable handles it in the note
When an encounter activates the Sodium Corrected for Hyperglycemia (its highest tier is recommended), Scribeable does not ask you for missing inputs. The score is computed in code from whatever inputs resolve from the transcript, the pasted chart context or charted labs; a computed value is written into the draft only when every required input already resolves.
The score is computed in code from the resolved inputs, not recalled by the language model. If the draft states a Sodium Corrected for Hyperglycemia value that disagrees with the computed one, the disagreement is flagged to the second drafting pass, which is instructed to correct the score and its interpretation before you see the note.
Classified as a deterministic formula: a spare suggestion is easy to ignore, so activation is permissive.
See it activate on your own encounter
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