CDT

Alcohol Testing • Jun 16, 2026

Proving alcohol use: what CDT, EtG and a blood test show

CDT looks back two to three weeks, EtG in hair up to about three months. Read what each alcohol marker measures and whic...

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Zuivertest

6 mins read

Alcohol Testing • Jun 16, 2026

CDT too high: causes of an abnormal value

An elevated CDT is usually from alcohol, but not always. Read which other causes can explain an abnormal %CDT.

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Zuivertest

2 mins read

Alcohol Testing • Jun 16, 2026

How long is alcohol detectable in blood, urine and hair?

Alcohol itself is measurable for hours to a day; CDT looks back 2-3 weeks and EtG in hair up to 3 months. See the window...

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Zuivertest

2 mins read

Workplace & Driving Licence Testing • Jun 16, 2026

CDT value and your driving licence: what the CBR investigation involves

For alcohol, the CBR looks at gamma-GT, CDT and MCV together. Read which blood values count and how far back CDT looks.

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Zuivertest

2 mins read