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Test Code K Potassium

Additional Codes

EPIC LAB4166

Clinical Significance

Potassium measurements are used in the diagnosis and treatment of hypokalemia (metabolic alkalosis/acidosis or the absence of acid-base disturbances), hyperkalemia (overadministration of potassium, acidosis, or crush injuries), renal failure, Addison's disesae or other diseases involving electrolyte imbalance.

 

Source: Roche Cobas ISE indirect Na-K-Cl for Gen.2 Method Sheet Version 5.0 2024-05

Methodology

Roche Cobas c503/c303

Sample Type

Preferred Sample Type
Light green top - Plasma

 

Acceptable Sample Type(s)
Dark green top - Plasma
Yellow top - Serum
Red top - Serum

Centrifuge: Yes 

Specimen Minimum Volume

65 uL with insert cup

Specimen Stability

Temperature Time
Ambient (15-25°C) 14 days
Refrigerated (2-8°C) (store) 14 days
Frozen (-15 to -20°C)  

Separate plasma or serum from cells within 2 hours.

Reference Ranges

Normal Range
3.5 - 5.1 mmol/L

 

Critical Values
<2.6 mmol/L
>6.4 mmol/L

 

Technical Range
1.5 - 10.0 mmol/L

Rejection Criteria

Hemolysis Index >20
Icterus Index >60
Lipemia Index >2,000, ultracentrifuge

 

Availability

Performed STAT
24/7 Yes

 

Performing Laboratory

MultiCare Yakima Memorial Hospital Laboratory

MultiCare Cancer Care (NSL)

Lab Department

Chemistry

CPT Code

84132

LOINC

2823-3 Potassium [Moles/Vol]