Test Details

Mnemonic

ICA

Ordering Code

1000790

CPT-4 Code(s)

82330

Specimen Information

Collect

Serum separator tube (SST)

Specimen Preparation

Allow blood to clot 30 - 60 minutes and centrifuge 10 minutes with stopper in place. Send unopened tube refrigerated.

Alternate Specimen

Green sodium or lithium heparin separator tubes only

Minimum Volume

1.0 mL

Transport Temperature

Refrigerated

Rejection Criteria

Samples not drawn in separator tubes or opened samples. Frozen or aliquoted samples are not acceptable for ionized calcium. Hemolyzed samples. Samples not centrifuged.

Stability

Room temperature: Unacceptable
Refrigerated: 48 hours unopened
Frozen: Unacceptable

Methodology

Ion Selective Electrode
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Reference Range

4.6–5.4 mg/dL
Critical values: ≤3.5 mg/dL and ≥ 6.5 mg/dL
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Performing Laboratory

Warde Medical Laboratory
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