POTASSIUM RBC

Specimen Required
Draw blood in a green sodium or lithium heparin tube. Send 4.0 mL whole blood (1.5 mL minimum) refrigerated in a screw-capped plastic vial.

Methodology
Ion Selective Electrode

Stability
Room Temperature: 72 hours; Refrigerated: 72 hours; Frozen: Unacceptable

Reference Range
90-111 mmol/L

Performed
Tuesday-Saturday

Turnaround Time4-6 days
Test CodeKRBC
CPT-4 Code (s)
84132
LOINC Codes
2824-1

Warde
Medical
Laboratory