Preferred amount: 1.0 mL Serum
Minimum amount: 0.5 mL Serum
Ion-Selective Electrode (ISE)
24hrs; Also offered STAT at an additional charge
Centrifuge required?: Yes - within one hour.
To determine if potassium concentration is within normal limits and to help evaluate an electrolyte imbalance; to monitor chronic or acute hyperkalemia or hypokalemia.