Name: Synthetic Cannabinoids K4 (or "UR-144") urine test
Brand: NarcoCheck
SKU: NCE-K4-1S
Price: 4.9 USD
Availability: InStock

Reference NCE-K4-1S

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
Manufacturer	NarcoCheck^®

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

In stock

Total: $4.90 Tax included

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".

K4 refers to a fairly specific synthetic cannabinoid: UR-144.

K4 is now much less common on the market and in seizures than K3.

Synthetic cannabis is an artificial chemical substance that has nothing to do with natural cannabis. It is called “cannabis” because it acts on the same receptors in the body—the CB1 and CB2 receptors—but its chemical composition is entirely different. It therefore requires a specific screening test.

Regardless of the name used—synthetic cannabis, spice, or “herbal incense” in English-speaking countries—these substances are now completely illegal and classified as narcotics.

Quick and easy to use

FAQ

What is the difference between the K4, K3 test and the K2 test?

There are 3 types of synthetic cannabis:

K4 refers to UR-144, a synthetic cannabinoid that emerged in 2011–2012. It enjoyed immense popularity until 2015. Since then, it has largely been replaced by K3. It is now rarely found.
It is this form of synthetic cannabis that this test detects.
K3 emerged in the early 2010s and saw a sharp rise in popularity between 2013 and 2016. Since then, its popularity has continued to grow, and K3 now accounts for the vast majority of the market and of synthetic cannabinoid seizures. The K3 class includes all molecules of the Pinaca, Fubinaca, Butinaca, etc., type.
There is a specific NarcoCheck urine test for K3 (AB-Pinaca).
K2 was the first class of synthetic cannabinoids to appear. Known as “Spice,” it enjoyed immense popularity between 2008 and 2012, largely due to molecules such as JWH-018, JWH-073, AM-2201, and CP 47,497. It is still found today, but in much smaller quantities compared to K3.
There is a specific NarcoCheck urine test for K2 (Spice).