Test Details

Mnemonic

CDT

Ordering Code

3686150

CPT-4 Code(s)

82373

Specimen Information

Collect

Serum separator tube (SST)

Specimen Preparation

Centrifuge, separate serum from cells and send 1.0 mL serum frozen in a screw capped plastic vial.

Alternate Specimen

Serum: Red top

Minimum Volume

0.2 mL

Transport Temperature

Frozen

Rejection Criteria

Plasma, hemolyzed specimens

Stability

Room temperature: Unacceptable
Refrigerated: 10 days
Frozen: 30 days

Methodology

Quantitative Electrophoresis
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Reference Range

Normal: 0 - 1.3%
Inconclusive: 1.4 - 1.6%;
Elevated: ≥1.7%
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Performing Laboratory

ARUP
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New York DOH Approval Status

Yes
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