The blood sugar level of the patient was 325 and potassium w

The blood sugar level of the patient was 325 and potassium was 4.2. After taking insulin the blood sugar level reduced to 225. What is the expected potassium level? (3.6, 4.5, 6, 10) key: Insulin has antagonist effect on K+

Solution

Answer should be 3.6. As insulin possess antagonist effect on both Glucose and K+ ions, after taking insulin it decreases both sugar levels and also K+ levels. So the K+ ion levels decreased.