Clinical reference support
Blood gas reference & anion gap
Compare pH, pCO₂, and HCO₃⁻ with one published dog/cat reference table and calculate a raw potassium-inclusive anion gap. This does not diagnose an acid-base disorder.
Scope and limits
- Shows only a published reference-table comparison and raw anion-gap arithmetic.
- Does not diagnose an acid-base disorder, assess compensation, correct for albumin, calculate delta or osmolar gaps, identify a toxin, direct treatment, or retain results.
- Reference intervals vary by analyzer, sample method, and patient context. Use the current laboratory interval and veterinary judgment.
Source and formula
The dog/cat pH, pCO₂, and HCO₃⁻ comparison intervals are from the Merck Veterinary Manual blood-gas reference table. Anion gap including potassium is calculated as Na⁺ + K⁺ − (Cl⁻ + HCO₃⁻), a transparent arithmetic measure; no reference interval or diagnostic label is applied.
Formula audit trail
The formula trail appears after valid values are entered.
Source: Merck Veterinary Manual Blood-Gas Analysis Reference Ranges. Reviewed July 2026.