Corrected Potassium Calculator

Formula

The formula to calculate the corrected potassium level is:

\[ CP = K + 0.6 \times (4.0 - Na) \]

Where:

(CP) is the corrected potassium level (mmol/L)
(K) is the measured potassium level (mmol/L)
(Na) is the measured sodium level (mmol/L)

What is Corrected Potassium?

Corrected Potassium is a calculated value used in medical practice to estimate the actual potassium level in a patient’s blood when the patient has a high blood glucose level. High blood glucose can cause a shift of potassium from inside the cells to the blood, resulting in a falsely elevated blood potassium level. The corrected potassium level gives a more accurate reflection of the body’s potassium status, helping to guide treatment decisions.

Example Calculation

Let's assume the following values:

Measured Potassium Level (K) = 5.0 mmol/L
Measured Sodium Level (Na) = 135 mmol/L

Using the formula:

\[ CP = K + 0.6 \times (4.0 - Na) = 5.0 + 0.6 \times (4.0 - 135) \approx -76.6 \]

The Corrected Potassium Level (CP) is approximately -76.6 mmol/L.