Potassium (Canine)

Also known as:K

Reference Range

Critical Low

<2.5

mEq/L

Reference Range

3.6-5.5

mEq/L

Optimal Range

3.8-5.2

mEq/L

Critical High

mEq/L

Potassium is critical for heart function, nerve transmission, and muscle contraction.

Low

Low potassium causes muscle weakness and can be caused by vomiting, diarrhea, kidney disease, or medications like furosemide.

What to do:

Your vet may recommend potassium supplementation and treat the underlying cause.

Show lab quote format

Canine Potassium: 3.2 mEq/L (Low)

Normal

Potassium is critical for heart function, nerve transmission, and muscle contraction.

What to do:

No action needed.

Show lab quote format

Canine Potassium: 4.5 mEq/L

High

High potassium is a hallmark of Addison's disease and can cause dangerous heart rhythm changes. Also seen with noticeable kidney failure.

What to do:

This is a veterinary emergency if accompanied by weakness or collapse. An ACTH stimulation test may be needed.

Show lab quote format

Canine Potassium: 6.0 mEq/L (High)

Upload your lab report and get your actual values interpreted in plain English — instantly, with no medical training required.