The only way to really find out if your potassium is in the normal range is to have a blood test where the serum potassium is measured. The normal serum potassium is between 3.5 and 5.1 ...

Hyperkalemia, which can induce signs of a heart attack or paralysis and weakness of the muscles, is defined as a level that is higher than 5.0-5.5 mEq/L.

Probability of ventricular tachycardia in relation to serum potassium concentration. Dotted lines denote SD. Reproduced with permission from Circulation. 1985;71: 645-649.[15] Serum potassium ...