Potassium WB (KWB)
Department: Core Lab
Test Synonym(s): LAB4539, KWB, Potassium Whole Blood
CPT Codes: 84132
Reference Range: 3.3-4.8 mmol/L
Tube Type: Heparinized syringe
Specimen: Venous blood
Alternate Specimen: Dark green top (Sodium Heparin); Pediatric bullets and microtainers are unacceptable.
Pediatric Requirements: 1 mL
Volume: 5 mL
Temperature: Room temperature
Reasons for Rejection: Clotted sample, Vacutainers less than 2/3 full, pediatric bullets or microtainers
Days Performed: Daily
Times Performed: Continuous
Special Instructions: Deliver to lab immediately at room temperature. Lab needs heparinized syringe or full green top tube. Pediatric bullets and microtainers are unacceptable. Sample must be received in lab within 1 hour of collection.
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