Hypokalemia is defined as a plasma potassium concentration of: (A) < 3.5 mmol/L, (B) < 3.6 mmol/L, (C) < 3.7 mmol/L, (D) < 3.8 mmol/L
Answer is A. Hypokalemia, defined as a plasma K+ concentration of <3.5 mM, Hyperkalemia is defined as a plasma potassium level of 5.5 mM Ref: Harrison 19e pg: 305