31420:CALCIUM (Ca), IONIZED, ARTERIAL WHOLE BLOOD

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31420:CALCIUM (Ca), IONIZED, ARTERIAL WHOLE BLOOD
Methodology: Calcium Specific Electrode
Edit Date: 3/17/2009
Performed: Daily
Released: Same day as tested
CPT Code: 82330
Specimen Collection Details
Collection: 5 mL whole blood by arterial or venous puncture in a calcium titrated, heparin coated syringe. After drawing, carefully remove any air bubbles. Capillary specimens may be used if they are collected in calcium titrated, heparin coated tubes, stoppered. Do not cool specimen.
Handling: Keep specimen in original container, allowing no exposure to air. Transport to laboratory ambient within 30 minutes.
Standard Volume: 5 mL whole blood.
Minimum Volume: 1 mL whole blood in a syringe or 200 µL capillary blood.
Transport: Ambient
Comments: Ionized calcium is the physiologically active form of calcium essential for transmission of nerve impulses, muscle contractions, enzyme reactions, and blood coagulation.

See also: Calcium (Ca), Ionized, Serum (31400).

Rejection Criteria: Specimen delayed beyond 30 minutes to testing.

1.18-1.35 mmol/L