Quality system: all our poducts are Made in France and have the CE/98/79 certification (in vitro diagnostic medical devices)

Contact us for a

or use our
contact form

THC urine test (marijuana)

THC urine test

• Urine screening for the detection of marijuana use.
• Cut-off : 50 ng/ml.

  • Reference : DOA-THC-1S
  • Type : Urine test
  • Manufacturer : NarcoCheck®
  • Reliability : ≈ 99%
  • Results in : 5 minutes
  • Time of detection : 2-30 days
  • Cut-off : 50 ng/ml
  • Packaging : Boxes of 50 tests
  • Standard : CE 98/79
  • Origin : Made in France

Private individuals:
you can buy online from our drug tests retail shop.

you can ask a quotation using our contact form or call us




This strip is made for the detection in human urine of marijuana consumption. 


It screens for all cannabinoids (cannabis derivatives) :

  • Marijuana (outdoor or indoor weed)
  • Cannabis resin, also called hashish
  • Cannabis oil (rarely used)


It is effective whatever the mode of consumption :

  • In joints (marijuana cigarettes).
  • By inhaler, bang etc.
  • In infusion or culinary preparations like cakes (also called "space cake")


This test is a qualitative assay (type "NO / YES"), and thus delivers a "NEGATIVE" or "POSITIVE" result.


Technical data


Cut-off : 50 ng/ml
This marijuana test will be positive if the sample tested contains at least 50 nanograms of THC per milliliter of urine, or negative if the sample contains less or not at all.


Detection time of THC (cannabis active substance) in urine :

  • 2 to 3 days for occasional consumption.
  • 5 to 10 for more or less regular consumption.
  • 14 to 30 days for a high consumption, and even longer for chronic use.


NarcoCheck® Marijuana test (THC 50)

Compound cut-off (ng/ml)
11-Nor-Δ8-THC-9-COOH 50
11-Nor-Δ9-THC-9-COOH 50
11-Hydroxy-Δ9-tetrahydrocannabinol >100 000
Δ8-Tetrahydrocannabinol 15 000
Δ9-Tetrahydrocannabinol 15 000
Cannabinol 20 000
Cannabidiol >100 000


Available test formats



The test is immersed directly into the urine sample, which prevents any liquid handling.

Currently on this page.

Cassette + pipette

Few microliters of sample are collected using a disposable pipette (provided with each test) and then introduced directly into the test.

Available only on special order.
Ask for a quotation