Days Set Up
Monday, Thursday
Analytic Time

6-11 days

MiChart Code
CDT for Congenital Disorders of Glycosylation (Sendout)
Soft Order Code
CDG

Test Updated:

Synonyms

CDG
CDT Congen Disord Glycosylatio
Mono-oligosaccharide/Di-oligosaccharide transferrin ratio
A-oligosaccharide/Di-oligosaccharide transferrin ratio

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Test Overview

Test Methodology

Affinity Chromatography / Mass Spectrometry

Test Usage

Screening test for congenital disorders of glycosylation. Note that a positive test could be due to a genetic or non-genetic condition. Reports of abnormal results will include recommendations for additional biochemical and molecular genetic studies to more precisely identify the correct form of CDG.

Reference Range

Transferrin Mono-oligo/Di-oligo Ratio: <or= 0.06; Transferrin A-oligo/Di-oligo Ratio: <or= 0.011; Transferrin Tri-sialo/Di-oligo Ratio: <or= 0.05; Apo CIII-1/Apo CIII-2 Ratio: <or= 2.91; Apo CIII-0/Apo CIII-2 Ratio: <or= 0.48.

* Reference ranges may change over time. Please refer to the original patient report when evaluating results.

Specimen Requirements

Collection Onsite

Collect specimen in red top or SST tube.

Collection Offsite

Collect specimen in red top or SST tube. Centrifuge, aliquot serum into a plastic vial and freeze.

Yellow Top Tube
Normal Volume
0.2 mL serum
Minimum Volume
0.1 mL serum

Billing Information

CPT Code
82373
Pro Fee Code
 
LOINC
 

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Our High Standard

Quality that sets us apart

As the reference laboratory division of Michigan Medicine's Department of Pathology, MLabs shares the institution's commitment to applying established quality principles to clinical laboratory testing. Like other large organizations in complex, consequential fields, we rely on an established approach to monitor quality throughout the testing process.