Carbohydrate deficient transferrin - cdt

This is an important test used to help measure the carbohydrate deficient transferrin (CDT) levels in the blood.

Venous blood
1 tests included
8 days turnaround



About Carbohydrate deficient transferrin - cdt

What is carbohydrate deficient transferrin?

CDT is a glycoprotein in the blood that plays a role in iron transportation. While it is present in small amounts naturally, high levels are linked with heavy alcohol consumption. Long term excessive drinking or binge drinking leads to an increase in CDT. Elevated CDT can be detected for several weeks after heavy drinking, meaning it can be used to monitor alcoholism.

Why take the test?

This test measures the carbohydrate deficient transferrin (CDT) levels in the blood. It is used to monitor alcoholism. 

Some bodies such as the DVLA require a CDT test of individuals at high-risk of alcoholism to prove sobriety. 

What's tested

Drug & Alcohol

How it works



Purchase your Kit

Just order a test online and get your kit delivered right to your door unless you are ordering a COVID-19 Fit to Fly test where you will be given appointment options to attend our clinics across the United Kingdom for a nose and throat swab PCR test at the checkout stage.



Take your test and post

Follow our simple instructions to take your sample and post back the enclosed prepaid envelope to our accredited lab for processing. We also offer home or workplace visits by a qualified nurse. For COVID-19 Fit to Fly tests you must attend one of our partner clinics for our trained collection officers to take your sample. You will then have the results emailed to you.



Get results directly to your dashboard

You will receive an email notification from our medical team when your results are available on your secure personalised health dashboard.