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Electrolytes - Blood

Source Blood
Mnemonic EP
Specimen Requirements 1 x 3 mL or 4.5 mL light green (mint) top PST tube.  Gold top SST tube also acceptable.

PSC: 0.3 mL plasma or serum
RRL: 0.2 mL plasma or serum

Minimum Whole Blood Volumes for Microcollections
Specimen Handling Must be centrifuged within 2 hours of collection.
Additional Information

Electrolytes include sodium (Na), potassium (K) and chloride (Cl) for community patients.

Electrolytes include sodium (Na), potassium (K), chloride (Cl) and carbon dioxide (CO2) for emergency patients, inpatients and outpatients tested at urgent care and hospital sites,

Testing Location Chemistry-All Sites
Testing Frequency Daily
Alternate Name(s)
Reference Interval