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Test Code K WB Postassium, Whole Blood

Performing Laboratory

Memorial Hospital Laboratory- Automated Procedures  304-388-5953       
General Hospital Laboratory 304-388-6244
Women and Children's Hospital Laboratory 304-388-2385
Teays Valley Hospital Laboratory 304-757-1770
Plateau Medical Center Laboratory 304-469-8621
Greenbrier Vally Laboratory 304-647-6060

Specimen Requirements

Whole Blood- Dark Green Lithium Heparin

4 mL of whole blood (minimum 2 mL)

Specimen Rejection

  • Improperly labeled, collected, stored, and transported
  • Quantity not sufficient

Storage and Stability

Room Temperature                       30 minutes
Ice Slurry                  2 hours

Reference Values

>18 yrs            3.5-5.1 mmol/L
>10-18 yrs            3.5-5.0 mmol/L
>2-10 yrs            3.5-4.9 mmol/L
>1 month-2 yrs            3.5-5.4 mmol/L
0- 1 month            3.5-5.9 mmol/L

Critical Value: < 2.8 mmol/L and > 6.0 mmol/L 

Methodology

Potentiometry

Days Test Set Up and Turnaround

Monday through Sunday, Continuously 

Results expected within 1 hour

CPT Coding

84132