Lab Test

Carbohydrate Deficient Transferrin, Adult, Serum

CDT (Carbohydrate Deficient Transferrin), Transferrin for Carbohydrate Deficient Transferrin (CDT), Transferrin Isoforms

Test Codes

MAYO: CDTA, Order as a Miscellaneous Sendout.

Department

Send Outs

Instructions

This test is for the evaluation of alcohol abuse.

Specimen Collection Criteria

Collect (preferred specimen): One plain Red-top tube.
Also acceptable: One Gold-top SST tube.

Physician Office/Draw Specimen Preparation

Let specimen clot 30-60 minutes then centrifuge to separate serum from cells. Transfer serum to plastic transport tube and freeze (-20°C/-4°F or below).

Preparation for Courier Transport

Transport: 0.1 mL serum, frozen (-20°C/-4°F or below). (Minimum: 0.05 mL)

Rejection Criteria

Specimens not collected and processed as indicated.

In-Lab Processing

Let specimen clot 30-60 minutes then centrifuge to separate serum from cells. Transfer serum to plastic transport tube and freeze (-20°C/-4°F or below).

Transport: 0.1 mL serum, frozen (-20°C/-4°F or below). (Minimum: 0.05 mL)

Storage

Specimen Stability for Testing:

Room Temperature (20-26°C or 68-78.8°F): 7 days
Refrigerated (2-8°C or 36-46°F): 28 days
Frozen (-20°C/-4°F or below): 45 days

Specimen Storage in Department Prior to Disposal:

Specimen retention time is determined by the policy of the reference laboratory. Contact the Sendout Laboratory with any questions.

Laboratory

Sent to Mayo Medical Laboratories, Rochester, MN.

Performed

Wednesday.
Results available in 6-11 days.

Reference Range

By report.

Test Methodology

Affinity Chromatography/Mass Spectrometry (MS).

CPT Codes

82373

Contacts

Last Updated

3/12/2020

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