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Test Code LAB114 Potassium

Additional Codes

CPT Code: 84132

Methodology

This test is also included in Basic Metabolic Panel (LAB15); Comprehensive Metabolic Panel (LAB17); Electrolytes Panel (LAB16) and Renal Function Panel (LAB19).

Performing Laboratory

TidalHealth Peninsula Regional - Core Laboratory: Chemistry

Specimen Requirements

Submit only 1 of the following specimens:

 

Plasma
Draw blood in a green-top (lithium heparin) tube(s). Spin down and send 2 mL of lithium heparin plasma. Hemolyzed specimen is not acceptable.
Note:  1. Indicate plasma on request form.

2. Label specimen appropriately (plasma).

 

Serum
Draw blood in a gold-top serum gel tube(s). Spin down and send 2 mL of serum. Hemolyzed specimen is not acceptable.
Note:  1. Indicate serum on request form.

2. Label specimen appropriately (serum).

Reference Values

0-9 days: 3.5-5.9 mEq/L

10 days-1 year: 4.1-5.3 mEq/L

2-15 years: 3.4-4.7 mEq/L

≥16 years: 3.6-5.1 mEq/L

Critical values (automatic call-back)

>6 months: <2.5 mEq/L or >7.0 mEq/L (hemolyzed)

>6 months: <2.5 mEq/L or >6.5 mEq/L (nonhemolyzed)

<6 months: <3.5 mEq/L or >7.0 mEq/L

Additional Information

Available STAT