Investigation Name:Carbohydrate Deficient Transferrin (CDT)

Pathology Laboratory:Proteins Lab, Ext 82709

Requestable Seperately?No

Part of Profile:No

E-Requesting Tab:Other

Lower Reference Range Limit:0

Upper Reference Range Limit:1.6

Units:%

Minimum Sample Volume:2ml

Expected Turnaround Time:10 days

Test Code:CDT

Sample Type:

Maximum Add on Time:3 day(s)

Complex Reference Range:According to the IFCC working group: CDT -IFCC CDT ≤1.7% : Normal result
CDT-IFCC 1.8 - ≤2.0%: inconclusive result
CDT-IFCC >2.0%: consistent with excessive alcohol consumption

Collection Conditions / Other Information:MUST BE DISCUSSED AND ARRANGED WITH DUTY BIOCHEMIST BEFORE COLLECTION.
LAB INSTRUCTIONS: Separate into Z5
See Transferrin electrophoresis for inborn errors of protein glycosylation
The relationship between %CDT and units of alcohol consumed is good, although less strong in pre-menopausal women than in men or post-menopausal women. Rare diseases of glycosylation (CDG syndromes) and the D variant of transferrin found in a small percentage of African subjects could theoretically cause false positive results.

Referred to Another Laboratory?No