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HelpTest Code CDTA Carbohydrate Deficient Transferrin, Adult, Serum
Additional Codes
| Epic Ordering Code | LAB3041445 |
| NBS code | LBC12086 |
| Service code | 36623 |
Reporting Name
Carb Def Transferrin, Adult, SSpecimen Type
SerumOrdering Guidance
This test is for evaluation of alcohol abuse. If the ordering healthcare professional is looking for congenital disorders of glycosylation, order CDG / Carbohydrate Deficient Transferrin for Congenital Disorders of Glycosylation, Serum.
Necessary Information
1. Patient's age is required.
2. Reason for testing is required if patient is younger than 21 years.
Specimen Required
Supplies: Sarstedt Aliquot Tube, 5 mL (T914)
Collection Container/Tube:
Preferred: Serum gel
Acceptable: Red top
Submission Container/Tube: Plastic vial
Specimen Volume: 0.1 mL Serum
Collection Instructions: Centrifuge and aliquot serum into a plastic vial.
NUH Outreach Laboratories:
Specimen Requirements
Submit only one of the following:
Preferred: Gold Top
Acceptable: Red Top
Processing Requirements
Centrifuge and aliquot serum into a plastic vial.
Specimen type: Serum
Volume: 1 mL
Storage/transport requirements: Refrigerated
Forms
If not ordering electronically, complete, print, and send a Therapeutics Test Request (T831) with the specimen.
Performing Laboratory
Mayo Clinic Laboratories in Rochester
Specimen Minimum Volume
Serum: 0.05 mL
Specimen Stability Information
| Specimen Type | Temperature | Time |
|---|---|---|
| Serum | Frozen (preferred) | 45 days |
| Refrigerated | 28 days | |
| Ambient | 7 days |
Reject Due To
| Gross hemolysis | OK |
| Gross lipemia | OK |
| Gross icterus | OK |
Method Name
Affinity Chromatography/Mass Spectrometry (MS)
Day(s) Performed
Wednesday
Report Available
3 to 9 daysPlease note that this is a referral test requiring transport to the external testing facility and an additional 3-5 days is required.
Reference Values
≤0.10
0.11-0.12 (Indeterminate)
CPT Code Information
82373
LOINC Code Information
| Test ID | Test Order Name | Order LOINC Value |
|---|---|---|
| CDTA | Carb Def Transferrin, Adult, S | 53803-3 |
| Result ID | Test Result Name | Result LOINC Value |
|---|---|---|
| 31714 | Mono-oligo/Di-oligo Ratio | 35469-6 |
| 31715 | Interpretation | 59462-2 |
Useful For
Indicating chronic alcohol abuse
This test is not appropriate for screening patients for congenital disorders of glycosylation.
Test Classification
This test was developed and its performance characteristics determined by Mayo Clinic in a manner consistent with CLIA requirements. It has not been cleared or approved by the US Food and Drug Administration.Last updated 06/07/2026