pH-Corrected Serum Potassium
pH-corrected serum potassium: adjusts measured potassium to a normal pH of 7.4 (≈ 0.6 mEq/L per 0.1 pH unit), disclosing the true potassium masked by an acid-base disturbance.
Open the calculator → Runs in your browser. Data leaves only if you deliberately send a problem report from the interactive tool.
Example
- Measured serum potassium
- 5.4 mEq/L
- Arterial pH
- 7.2
Result: pH-corrected serum potassium 4.2 mEq/L at a normal pH of 7.4.
The tool opens with these values already filled in. Replace them with your own.
What the result means
- Corrected K
- Corrected K = measured K - 0.6 x [(7.4 - pH) / 0.1]; the organic-acidosis coefficient is closer to 0.3. A rule-of-thumb estimate, not a replacement order.
What you enter
- Measured serum potassium
- Arterial pH (6.5–8.0)
How this is calculated
Adrogue HJ, Madias NE. Changes in plasma potassium concentration during acute acid-base disturbances. Am J Med. 1981;71(3):456-467. Read the source ↗
A reference and educational tool. Not medical, legal, or financial advice, and not a substitute for clinician judgment.