Carbohydrate-deficient Transferrin (CDT)

This test measures the level of Carbohydrate-deficient Transferrin (CDT) in the blood and may be used to detect heavy ethanol (alcohol) consumption.

Test results may take 3-5 business days.

Available Laboratories: LabCorp, Quest Diagnostics

$249
LabCorp $219
Quest

Sample Results

Carbohydrate-deficient Transferrin (CDT)

Sample Results

$249
LabCorp $219
Quest

Test Details

Transferrin is a protein found in the serum that carries iron through the bloodstream to the bone marrow, liver and spleen. There are numerous types of transferrin with the most common form having four sialic acid chains, known as tetrasialotransferrin. In individuals who consume large quantities of alcohol, the amount of transferrin with zero, one or two sialic acid chains increases, known as CDT. This is what is then measured in the bloodstream to be used as markers of alcohol abuse. This test may also be used to monitor treatment in individuals with alcohol abuse and to monitor for a possible relapse.

This test is not intended to detect occasional or light alcohol consumption. Elevated CDT levels are typically indicative of heavy alcohol consumption during the last 2-4 weeks. An ETG Alcohol test may be more effective at detecting alcohol use in the past 1-3 days.

Reviewed By: Dr. Kurt Kloss, MD
Last Reviewed Date: Mar 12, 2020

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(Note: to preserve lowest possible per test pricing, a single $10.00 lab fee is applied to one or more blood tests. You will not incur any additional charges at the lab.)

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Certain result values may prompt a phone call from our ordering provider to ensure the patient is aware of their result.

Sample Type

Blood

Prepare For Your Test

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Also Known As

No other names specified