Sign in →

Test Code LAB9571 Potassium, Blood

Performing Laboratory

Barnes-Jewish Hospital Laboratory

Methodology

Direct Ion-Selective Electrode (ISE)

Literature Reference:

Reference manual: ABL 800 FLEX Series. Radiometer America, Bronshoj Denmark, 2009.

Specimen Requirements

Specimen Type: Whole blood

Container/Tube: 1 Sims-Portex blood gas syringe

Specimen Volume: Full syringe

 

Collection Instructions: Send capped syringe (no needle attached) to the laboratory.

Day(s) Test Set Up

Monday through Sunday

Turnaround Time:
STAT: 15 minutes after receipt in laboratory
Routine: not available

Test Classification and CPT Coding

84132

Reference Values

3.3-4.9 mmol/L

Critical result (automatic call-back): ≤2.5 mmol/L or ≥6.2 mmol/L

Literature Reference:

Scott MG, Klutts JS, et al. Physiology and disorders of water electrolyte, and acid-base metabolism. In: Tietz textbook of clinical chemistry. 4th ed. Elsevier Saunders Co., 2005;1747-76.

Specimen Transport Temperature

Ambient

Additional Information

For BJH Laboratory Use Only

Analyte Stability:

See Analyte Stability Chart under General Information for a complete list.

Laboratory Processing Instructions:

Test performed in BJH Core Lab. Deliver to blood gas workstation immediately.

LOINC Code Information

Name LOINC Code
Potassium, whole blood 6298-4