PreDosage Cannabis (THC) test - 3 levels

PreDosage Cannabis (THC) Urine test

The very first test that evaluates the amount of cannabis present in the urine sample!

Beyond a simple Positive or Negative result, you now know if the consumption of cannabis is LOW, MEDIUM or HIGH.

3 detection levels in standard version or 5 detection levels in extended version (for the detection of chronic consumptions).

Made in France and ISO 13485 certified.

Reference NCE-M03-9B
Test type Urine
Standard version (3 levels) 18 + 50 +150 ng/ml
Extended version (5 levels) 18 + 50 + 150 +300 + 600 ng/ml
Maximum detection time 2 to 30 days or even more, depending on consumption level.
Results in 10 minutes
Reliability Excellent (≈99%)
Manufacturer NarcoCheck®
Quantity Unit price
From 1 to 2 tests $8.90 per test
From 3 to 9 tests $8.50 per test
From 10 to 19 tests $7.50 per test
From 20 to 30 tests $7.00 per test
More than 30 tests Contact us
In stock

Total: $8.90 Tax included

NarcoCheck® PreDosage

a new revolutionary urine test for cannabis / marijuana

in standard version
in extended version
to know the truth

At the forefront of cannabis screening, this test does not only say Positive or Negative.

It gives an indication of the quantity of THC that is detected in the urine sample.

This information is very useful to monitor the evolution of a consumption or the good progress of a withdrawal.

Standard version
3 detection levels
Cannabis urine test with 3 detection levels

This version covers the concentration levels of THC which generally correspond to light, or even more or less regular, consumption.

Extended version
5 detection levels
Cannabis urine test with 5 detection levels

This version allows a more precise detection of the cases of frequent/regular or even chronic consumption, like the daily use of cannabis and marijuana.


This test is extremely effective over time, when carried out in series (on a weekly basis, for example). A first screening serves as a reference test. The following tests will then show the decrease or increase in THC level in urine. By leading regular screenings, it will be possible to determine if the subject has stopped his consumption or if he has smoked again.

This test is recommended for...

  • Parents who need to know the marijuana consumption habits of their teenagers, or who help and support them during weaning.
  • Healthcare professionals, who need a rapid and inexpensive way to ensure that detoxification is keeping going as planned.
  • Consumers themselves, who can finally understand how cannabis can massively and durably impregnate their metabolism.

Quick and easy to use

What do the different levels of this test reveal?

This may reveal:

  • either the residual traces of a light or occasional consumption (in the last 24-72h).
  • or, a more or less ancient consumption whose traces are being eliminated by the organism.

This level corresponds to the international standard threshold for the detection of cannabis.

This may reveal:

  • either a habit of consumption more or less regular (at least several joints per month).
  • or a rather recent episode of consumption (in the last 48-72h).
  • or a possible resumption of cannabis use, if a previous PreDosage test was positive only at level 1.

This may reveal:

  • either a habit of regular consumption (probably one to several times a week).
  • or a recent episode of consumption (in the last 48 hours).
  • or a possible resumption of cannabis use, if a previous PreDosage test was positive only at level 1 or 2.

This may reveal:

  • either a habit of regular consumption (probably daily).
  • or a very recent consumption episode (in the last 24 hours).
  • or a possible resumption of cannabis use, if a previous PreDosage test was positive at lower levels.

This may reveal:

  • either a very frequent consumption habit (at least several times per day).
  • or a very recent consumption episode (in the last 6-18 hours).
  • or a possible resumption of cannabis use, if a previous PreDosage test was positive at lower levels.

Benefits of our PreDosage system (a THC test with multiple levels)

People can now have a clear picture of their own situation

Many casual consumers would be surprised to find out how much their urines can be loaded with THC. Today's marijuana has nothing to do with the one used during the 1970s / 80s. Marijuana/weed and hashish are infinitely more powerful nowadays, as producers strive to make their drugs more addictive to "retain" their customers. As a result, enormous levels of THC are ingested with each smoked joint. The point is to have them stop lying to themselves, because they would know now that some occasional joints can generate a strong and constant concentration of harmful substances in the organism, so cannabis can't be as safe as they wish it to be.

Evaluate an emergency level:

Knowing that a teenager or a loved one is positive for cannabis is important, but having an indication of the level of consumption is even more necessary! This can help to evaluate the urgency of the situation. Indeed, people who smoke marijuana generally tend to greatly minimize their level of consumption. For parents, it is therefore difficult to know the magnitude of the problem. Now, thanks to the PreDosage system, they can have a clear indication on the level and habits of consumption of their teenagers.

Monitor the evolution of a consumption or the progression of a weaning:

When a cannabis user makes a commitment to put an end to his addiction, the support of his entourage is absolutely paramount. Encouraging and motivating is a huge part of helping those who decide to quit smoking cannabis. But also needs to realize that this commitment cannot be made lightly. Initial screening tests with PreDosage help to maintain constant vigilance and to monitor the level of cannabis in urine. If the amount of THC in the urine goes up during this process, it may indicate a possible relapse. The entourage can then react without wasting time. If the weaning is respected, the former consumer should see his / her THC positivity reduced from level to level until a totally negative test after a few weeks. This finally negative test can also constitute an important psychological aid. Some will choose to save it, because it will be able to symbolize permanently the detoxification of their organism and the victory over the addiction.

What does this test exactly detect?

Cannabis in all forms, namely :

  • Marijuana / weed (grown indoor or outdoor)
  • Hashish
  • Cannabis oil

Whatever the mode of consumption is:

  • Smoked in cigarettes (joints)
  • Smoked in pipes (also called "bang") or inhalers / vaporizers
  • Ingested, in the form of cakes or other mixtures with food

How long does cannabis remain detectable in the urine?

The detection timeframe of cannabis use in urine varies depending on the metabolism and level of consumption of each person.


  • 2 to 3 days after the last intake, for exceptional or occasional consumptions.
  • 5 to 10 days, for more regular smokers (3 or 4 joints per week).
  • 14 to 30 days (even several months), for heavy consumers (1 joint per day and more).
  • Up to 40-60 days for some chronic consumers (several joints per day regularly).
  • 1 to 5 days, when the drug is ingested (infusion, cake etc ...).
We ship worldwide !
Label UFAF

Used by the French Armed Forces

After being evaluated and selected for its high quality and performance, this product has been awarded the official label for equipment used by the French Army, Navy and/or Air Force.

See the certificate

Fast and Easy

Sensitivity / Specificity

Cut-off Details

NarcoCheck® - PreDosage Cannabis (THC) Urine test
Compound Cut-off (ng/ml)
11-Nor-Δ9-THC-9-COOH 18
11-Hydroxy-Δ9-tetrahydrocannabinol >100 000
11-Nor-Δ8-THC-9-COOH 18
Cannabidiol >100 000
Cannabinol 11 000
Δ8-Tetrahydrocannabinol 8 000
Δ9-Tetrahydrocannabinol (native THC) 8 000
Compound Cut-off (ng/ml)
11-Nor-Δ9-THC-9-COOH 50
11-Hydroxy-Δ9-tetrahydrocannabinol >100 000
11-Nor-Δ8-THC-9-COOH 50
Cannabidiol >100 000
Cannabinol 20 000
Δ8-Tetrahydrocannabinol 15 000
Δ9-Tetrahydrocannabinol (native THC) 15 000
Compound Cut-off (ng/ml)
11-Nor-Δ9-THC-9-COOH 150
11-Hydroxy-Δ9-tetrahydrocannabinol >100 000
11-Nor-Δ8-THC-9-COOH 150
Cannabidiol >100 000
Cannabinol >20 000
Δ8-Tetrahydrocannabinol 80 000
Δ9-Tetrahydrocannabinol (native THC) 80 000
Compound Cut-off (ng/ml)
11-Nor-Δ9-THC-9-COOH 300
11-Hydroxy-Δ9-tetrahydrocannabinol >100 000
11-Nor-Δ8-THC-9-COOH 300
Cannabidiol >100 000
Cannabinol >100 000
Δ8-Tetrahydrocannabinol >100 000
Δ9-Tetrahydrocannabinol (native THC) >100 000
Compound Cut-off (ng/ml)
11-Nor-Δ9-THC-9-COOH 600
11-Hydroxy-Δ9-tetrahydrocannabinol >100 000
11-Nor-Δ8-THC-9-COOH 600
Cannabidiol >100 000
Cannabinol >100 000
Δ8-Tetrahydrocannabinol >100 000
Δ9-Tetrahydrocannabinol (native THC) >100 000