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Test ID CDGN Congenital Disorders of N-Glycosylation, Serum


Ordering Guidance


This test is for congenital disorders of glycosylation. For evaluation of alcohol abuse, order CDTA / Carbohydrate Deficient Transferrin, Adult, Serum.



Necessary Information


1. Patient’s age is required.

2. Reason for testing is required.



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: 0.15 mL Serum

Collection Instructions: Centrifuge and aliquot serum into a plastic vial.


Forms

1. Congenital Disorders of Glycosylation Patient Information

2. If not ordering electronically, complete, print, and send a Biochemical Genetics Test Request (T798) with the specimen.

Secondary ID

65485

Useful For

Screening for N-linked congenital disorders of glycosylation

 

Providing information on specific structural oligosaccharide abnormalities to potentially direct further genetic testing

Additional Tests

Test ID Reporting Name Available Separately Always Performed
CDG CDG, S Yes Yes

Testing Algorithm

When this test is ordered, carbohydrate deficient transferrin for congenital disorders will always be performed at an additional charge.

 

For more information see Congenital Disorders of Glycosylation: Screening Algorithm.

Specimen Type

Serum

Specimen Stability Information

Specimen Type Temperature Time
Serum Refrigerated (preferred) 28 days
  Frozen  45 days
  Ambient  7 days

Reject Due To

Gross hemolysis Reject
Gross lipemia OK
Gross icterus OK

Reference Values

An interpretive report will be provided.

Day(s) Performed

Thursday

Report Available

5 to 11 days

Performing Laboratory

Mayo Clinic Laboratories in Rochester

CPT Code Information

83789