Low potassium (hypokalemia) refers to a lower than normal potassium level in your bloodstream. Potassium is a chemical (electrolyte) that is critical to the proper functioning of nerve and muscles cells, particularly heart muscle cells. Normally, your blood potassium level is 3.6 to 5.2 millimoles per liter (mmol/L).
If it's your first time to that airport maybe two hours for a domestic flight and three for an international flight. If you've been to this â¦airport before an hour and a half (maybe less if you don't intend to check bags) for a domestic flight.
The American Airlines website recommends arriving at least 60 minutes early for domestic flights and two hours early for international flights. You must check in at least 30 minutes before a domestic flight and 60 minutes for international flights; otherwise, American Airlines has the right to cancel your ticket.