Test Directory
3225 Potassium, serum
Specimen Type
Specimen Stability
Reference Range
Serum-SST
48hrs 2-8° C
3.6-5.4 mEq/L
Specimen Requirements
Preferred amount: 1.0 mL Serum
Minimum amount: 0.5 mL Serum
Minimum amount: 0.5 mL Serum
Method
Ion-Selective Electrode (ISE)
Schedule
Mon-Sat
Turn-Around Time
24hrs; Also offered STAT at an additional charge
Instructions/Notes
Centrifuge required?: Yes - within one hour.
Avoid hemolysis.
Avoid hemolysis.
Clinical Utility
To determine if potassium concentration is within normal limits and to help evaluate an electrolyte imbalance; to monitor chronic or acute hyperkalemia or hypokalemia.
CPT Codes
84132
