Introducing the highly efficient K4 Rapid Test Strip by QL Biotech, a revolutionary product in the realm of drug abuse testing. Designed for straightforward use and yielding fast, accurate results, this test strip has positioned itself as a go-to tool for professionals across various fields. Our K4 rapid test strip stands as an embodiment of QL Biotech's dedication to enabling effective drug testing. It allows the detection of Synthetic Cannabis (K4) in a specimen of urine, with a cut-off at a mere 20ng/ml. Assuredly, the accuracy of our test results aren't compromised by the promise of rapidity. This balance of speed and precision is what sets our test kits apart from the competition. Our K4 rapid test strip comes with a CE certification, ensuring the credibility and safety of our product. It serves as one of the many one-step drug abuse test kits provided by us. Consistent with QL Biotech's commitment to reliable testing, all our kits, including the K4 rapid test strip, provide trustworthy and prompt results. This makes them apt for purpose across various industries including healthcare, law enforcement, and corporate environments.



The K4 rapid test strip is part of our larger line of drug abuse test products. Our range extends to different substances including but not limited to Morphine (MOR), Methamphetamine (MET), Ketamine (KET), Ecstasy (MDMA), and Marijuana (THC). All our other products also maintain the same high standard of accuracy and rapidity, ensuring holistic solutions for your drug testing needs. At QL Biotech, we focus not just on the provision of top-tier products, but also on the continuous enhancement of existing ones. This focus on improvement allows us to deliver the best possible solutions to our customers. Trust QL Biotech's K4 rapid test strip for accurate, fast, and reliable drug testing results. Invest in assured professionalism and improve your drug screening process today.