Potassium

also known as K

NORMAL_RANGE
3.5 – 5 mEq/L
UNIT
mEq/L

/WHAT_IT_IS

Potassium is the primary intracellular electrolyte. Both high and low levels are dangerous — affecting heart rhythm.

/NORMAL_RANGE

Reference: 3.5–5.0 mEq/L.

What does high K mean?

  • +Kidney dysfunction, ACE inhibitors, hemolysis (often artifactual from tight tourniquet).

What does low K mean?

  • +Diuretics, vomiting, diarrhea, low intake.

/ON_TRT

Not affected by TRT.

/RELATED

/TRACK_THIS

Track K in the app.

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Last reviewed: 2026-06-04 · MyTRT does not provide medical advice. Always consult your physician.