Audit one source-labelled same-panel anion gap with an explicit potassium formula and optional fully documented albumin adjustment—without a universal range or diagnosis.
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Reproduce one de-identified same-panel anion-gap calculation with an explicit potassium formula and optional fully documented albumin adjustment, without inventing a reference interval or diagnosis.
Avoid mixing times, formula variants or a generic normal interval while reviewing signed arithmetic.
Name the same-panel source, copy its formula convention and electrolytes, and compare externally with that laboratory's interval.
Can audit the raw gap without an automated elevated/normal/acid-base diagnosis.
Keep analyzer-specific reference intervals and optional potassium inclusion outside a universal template.
Select the documented formula, inspect complete source labels and verify no default interval or analyzer assumption appears.
The record preserves laboratory ownership of methods, units and interpretation.
See how a documented adjustment changes arithmetic without learning that one 4.0/2.5 convention is mandatory or diagnostic.
Run separate education records with no adjustment and with a complete named measured/reference/factor triplet.
Can trace raw and adjusted results while incomplete adjustment inputs are rejected and clinical conclusions remain external.
Outputs and checklists are planning aids. Review the linked current authorities and the records, terms, instructions, and requirements that apply to your exact situation before a consequential decision.
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Timing, sample validity, analyzer method and units belong to the source report. Do not combine values from different collections or assume the calculator can validate the panel.
Use Na, Cl, HCO₃/total CO₂ and optional K from one reviewed panelClinical references use both conventions. The selected formula must match the responsible laboratory or worksheet, and potassium becomes required only for the potassium-included formula.
Without K: Na − Cl − HCO₃; with K: Na + K − Cl − HCO₃No 4.0 or 2.5 default is inferred. Adjustment is calculated only when one named method supplies the measured albumin, its reference value and the factor; it is still not a diagnosis.
Adjusted = raw + factor × (reference albumin − measured albumin)Updated: August 2026
Select Na − Cl − HCO₃ and copy the same-panel values. Compare the signed result with that laboratory's analyzer-specific interval outside the calculator.
Select the potassium-included formula and enter K from the same panel. Leaving potassium blank is rejected rather than silently reverting to the other convention.
Name the method and copy its measured albumin, reference albumin and factor. The tool shows raw and adjusted arithmetic but does not label either normal or abnormal.
Reproduce one de-identified laboratory or worksheet record without mixing panels or inventing a normal range. Select whether the controlling method includes potassium, copy the same-panel electrolytes, and optionally enter a complete named albumin-adjustment method. Analyzer-specific intervals, sample validity, acid-base diagnosis, cause and treatment remain outside the calculator.