| Quantity | Unit price | |
|---|---|---|
| From 1 to 2 tests | $4.90 per test | |
| From 3 to 9 tests | $4.50 per test | |
| From 10 to 19 tests | $3.90 per test | |
| From 20 to 30 tests | $2.90 per test | |
| More than 30 tests | Contact us |
Synthetic Cannabinoids K4 (or "UR-144") urine test
Urine test for the detection of synthetic cannabinoids type K4, also called UR-144.
K4 is the third type of synthetic cannabis to have appeared on the market.
| Test type | Urine |
|---|---|
| Cut-off (detection level) | 25 ng/ml |
| Maximum detection time | 1 to 3 days after the last intake |
| Results in | 5 minutes |
| Reliability | Excellent (≈99%) |
| Manufacturer | NarcoCheck® |
About this test
The NarcoCheck® K4 rapid test strip is an immunoassay for fast the detection in human urine of synthetic cannabis of type "K4". This synthetic cannabis is now also known as UR-144.
Synthetic cannabis has nothing to do with natural cannabis. It is actually an active chemical and artificial substance. It is called "cannabis" because it mimics natural cannabis by acting on the same receptors of the organism, namely the CB1 and CB2 receptors.
Its chemical composition is completely different from natural cannabis, and as such, synthetic cannabis must be screened with a test specific to it, just like any other drug.
This test will detect the main molecule of K4, the UR-144.
Quick and easy to use
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FAQ
What is the difference between the K4, K3 test and the K2 test?
There are 3 types of synthetic cannabis:
- The K4, or UR-144, is a third type of synthetic cannabinoids, which has been on the market since 2014-2015.
It is this form of synthetic cannabis that this test detects. - The K3, or AB-PINACA, is the second type of synthetic cannabinoids, which has been on the market more and more since 2014-2015.
There is a specific NarcoCheck urine test for K3 (AB-Pinaca). - The K2, or Spice. It was the first type of synthetic cannabis to appear in the mid-2000s. It is still widely found in various seizures made around the world.
There is a specific NarcoCheck urine test for K2 (Spice).
Fast and Easy
Sensitivity / Specificity
Cut-off Details
NarcoCheck® - Synthetic Cannabinoids K4 (or "UR-144") urine test
Acronym
:
K4
Calibrator
:
UR-144 5-Pentanoic acid
Sensitivity
:
25 ng/ml
Specificity
| Compound | Sensitivity (ng/ml) |
|---|
| Compound | Cut-off (ng/ml) |
|---|---|
| UR-144 5-Pentanoic acid | 25 |
| 5F-AB-PINACA 4-hydroxypentyl (metabolite) | 10 000 |
| AB-PINACA 4-hydroxypentyl (metabolite) | >10 000 |
| ADB-PINACA 4-hydroxypentyl (metabolite) | >10 000 |
| UR-144 4-hydroxypentyl | 10 000 |
| UR-144 5-hydroxypentyl | 5 000 |
| XLR-11 4-hydroxypentyl | 2 000 |
Complementary products
| 1 test | $4.90 | ||
| 3 tests | $4.50 | per test | |
| 10 tests | $3.90 | per test | |
| 20 tests | $2.90 | per test |
| 1 test | $12.90 | ||
| 5 tests | $12.50 | per test | |
| 10 tests | $11.90 | per test | |
| 20 tests | $10.90 | per test |
| 1 test | $4.90 | ||
| 3 tests | $4.50 | per test | |
| 10 tests | $3.90 | per test | |
| 20 tests | $2.90 | per test |
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