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Test Compendium

2125: CALCIUM, IONIZED, SERUM

Test Code

  • 2125

Test Synonym

  • Calcium, Ionized, IONIZED CALCIUM

Minimum Volume

  • 1 mL

Specimen Requirements

  • Serum

Container

  • Ionized Calcium Sat-Unopened

Storage

  • Refrigerated

Turn Around Time

  • 4 days

CPT Codes

  • 82330
    *The CPT codes provided are based on AMA guidelines and are provided for informational purposes only. CPT coding is the responsibility of the billing entity. Please direct any questions regarding the CPT coding to the payer being billed.

Special Instructions

  • separate SST tube for ionized calcium and adhere a piece of labeling tape over the top of the tube with the following written on it “Ionized Calcium -DO NOT OPEN.

Additional Information

  • Centrifuge and send unopened gel-barrier tube with vacuum intact. It is critical that the vacuum not be disrupted. Exposure of the serum to room air causes a loss of carbon dioxide to the atmosphere. This changes the sample pH and can prevent the lab from measuring the ionized calcium. To ensure that testing can be performed, send a separate tube for ionized calcium and adhere a piece of labeling tape over the top of the tube with the following written on it IONIZED CALCIUM-DO NOT OPEN.

Specimen Stability

  • AMBIENT: 14 days REFRIGERATED: 14 days FROZEN: