Potassium, Blood

CERNER / EPIC MNEMONIC: BG/K; K
POE DESCRIPTION: POTASSIUM; K
CPT CODE: 84132; 84132; 84132
DAYS PERFORMED: Specimen accepted daily, 24 hours
TURNAROUND TIME: Routine: 8 hours; Blood Gas Laboratory: 15 minutes; stat: 1 hour
SPECIAL INSTRUCTIONS: Must be kept on ice if ABG is ordered. Results will be affected by hemolysis.
CONTAINER TYPE:

SST tube, heparinized syringe (Blood Gas Laboratory)

SPECIMEN REQUIREMENTS: Blood (serum, plasma)
REJECTION CRITERIA: Clotted syringe, needle attached to the syringe, and air bubbles in the sample.
MINIMUM VOLUME: 0.4 mL blood (0.2 mL serum, 0.3 mL whole blood)
REFERENCE RANGE: Younger than 1 month: 4.0-6.0 mmol/L, 1 month to adult: 3.4-5.3 mmol/L
CRITICAL VALUES:

< 2.5; > 6.5

TEST SYNONYM(S):K+, Blood; Serum Potassium