CDT; marker for excessive alcohol consumption.
Blood collection at collection point
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CDT is a biomarker used to measure heavy alcohol consumption. It refers to a form of the transferrin protein that is lower in carbohydrates when there is heavy alcohol consumption. HPLC refers to the method.
This test is useful for individuals who want to know if their alcohol consumption is affecting their health. It is particularly useful for medical professionals to assess heavy drinking over an extended period, usually the last two weeks.
A CDT test can indicate long-term heavy alcohol consumption. It is more sensitive and specific for alcohol than other tests and can help in assessing levels of alcohol consumption.
A high CDT level indicates heavy and regular alcohol consumption. This may point to potential health risks and the need for further evaluation or a change in lifestyle.
A low CDT level suggests moderate or no alcohol consumption. This is generally an indication that alcohol is not significantly affecting the transferrin protein level.
This test is included in Dutch healthcare guidelines and is regularly used for its respective indications.
Rationale for this test
CDT (carbohydrate-deficient transferrin) is een gevestigde biomarker voor zwaar alcoholgebruik in de Nederlandse reguliere geneeskunde. De test is opgenomen in Nederlandse zorgrichtlijnen voor detectie van overmatig alcoholgebruik en wordt standaard gebruikt bij CBR-keuringen. De HPLC-methode is erkend als referentiemethode door de NVKC en heeft een hoge diagnostische betrouwbaarheid voor het vaststellen van langdurig zwaar alcoholgebruik over de afgelopen 2-3 weken.
Dutch clinical guidelines and healthcare organisations
International scientific literature
We recommend consulting these independent sources before ordering a preventive health check.
Brochure on preventive health checks: careful choice, reliability, pros and cons, checklist.
Independent information about preventive health checks from the National Institute for Public Health and the Environment.
Reliable patient information about illnesses and complaints from Dutch GPs (NHG).
Public-facing website of the Dutch Society for Clinical Chemistry with explanations of blood tests and laboratory values.
Answers to what people usually want to know.
After ordering we generate a referral letter and email you the instructions. You pick a collection point yourself and book an appointment there. Blood is drawn at the location, processed at the lab, and your result arrives digitally.
Often within a few working days. How soon you can be seen depends on how busy the location is and the type of analysis. For specialist analyses we first ship collection materials, which takes a bit longer.
At most collection points yes. Some accept walk-ins. This is clearly indicated per location. You choose the location that works best for you.
That depends on the test. Whether fasting is required, and from what time, is clearly stated in the instructions you receive after ordering. No surprises at the counter.
It varies per analysis: from same-day to a few working days. Standard values often come back quickly; analyses that go to an external lab can take a bit longer. You get an email with a link to your digital result, including a short explanation per value.
We work with 1,000+ collection points across the Netherlands. After ordering you'll see which locations near you are available and you pick where you'd like to go.
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