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4831: Calcium, Ionized Print View
Calcium (Ionized) ISE  < 8 months: Call Client Services
< 11 years: 4.9 - 5.4
< 18 years: 4.8 - 5.3
>= 18 years: 4.8 - 5.6 
mg/dL 

PRIMARY
1 Serum Separator Tube 2 (0.6) mL   Refrigerated - 7 Day(s)/Room Temperature - 7 Day(s) Unopened Serum Separator Tube ONLY. SEE COLLECTION INSTRUCTIONS./// 
ALTERNATE

Ionized calcium represents the true bioavailable calcium in the circulation. In situations where the total calcium is normal, but does not fit the clinical picture, a determination of the ionized calcium will, many times show an elevation in the bioavailable calcium.

Collect blood (2 mL serum) in a gel
barrier tube. Let clot and spin
immediately with cap on. Do not open
tube. Ship the unopened gel barrier tube
at room temperature. Do not freeze.
Setup Schedule
Tuesday-Saturday

Reported (Analytical Time)
Same day

CPT Code
82330

The CPT codes provided are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payer being billed.

Notes
Ionized calcium is normalized to a pH of 7.4.






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For test information, please call Client Services at 800-421-4449.

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