Discover articles on blood values, health and prevention. Clear, well-sourced explanations that help you understand your blood test and your results better.
Detection windows per substance and per matrix (urine, blood, hair, saliva). With lab cut-offs, what shifts them, and which test fits your situation.
CDT looks back two to three weeks, EtG in hair up to about three months. Read what each alcohol marker measures and whic...
An elevated CDT is usually from alcohol, but not always. Read which other causes can explain an abnormal %CDT.
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...
EtG in hair covers about a month per centimetre, up to around three months. Read how a hair test differs from CDT in blo...
For alcohol, the CBR looks at gamma-GT, CDT and MCV together. Read which blood values count and how far back CDT looks.
THC is detectable for 1 to 3 days in urine after single use, up to about a month with frequent use. Zuivertest does not...
MDMA is usually detectable for 1 to 3 days in urine and up to 90 days in hair. Zuivertest does not screen for MDMA; this...
3-MMC is usually detectable for about 1 to 3 days in urine. Standard rapid tests often do not recognise it.
GHB has a short window: about 6 to 8 hours in blood and about 12 hours in urine. Timing therefore matters.
Amphetamine is usually detectable for 1 to 3 days in urine and up to 90 days in hair. See the window per matrix.
Ketamine is usually detectable for 1 to 3 days in urine and up to 90 days in hair. See the window per matrix.
Cocaine is usually detectable for 1 to 4 days in urine and up to 90 days in hair. See the detection window per matrix.