Drugs of Abuse Testing Assays
6-Acetylmorphine
AB-PINACA
- ARK AB-PINACA Assay
- Immunalysis Synthetic Cannabinoids-3 HEIA
Amphetamines
- Immunalysis Amphetamines HEIA
Barbiturates
- Immunalysis Barbiturates HEIA
Benzodiazepines
Benzoylecgonine (Cocaine Metab.)
- Immunalysis Benzoylecgonine HEIA
Buprenorphine
Cannabinoids
- Immunalysis Cannabinoids HEIA
Carisoprodol
- Immunalysis Carisoprodol HEIA
EDDP
- ARK EDDP Assay
- Immunalysis EDDP Specific HEIA
Ethylglucuronide (EtG)
Fentanyl
JWH-018
- ARK UR144/JWH-018 Assay
- Immunalysis Synthetic Cannabinoids-1 HEIA
Ketamine
Meperidine
- ARK Meperidine Assay
- Immunalysis Meperidine HEIA
Methamphetamine
- Immunalysis Methamphetamine HEIA
Methylphenidate-Metabolite
Opiates
- Immunalysis Opiates HEIA
Oxycodone
- Immunalysis Oxycodone HEIA
Phencyclidine (PCP)
- Immunalysis Phencyclidine HEIA
Pregabalin
Tapentadol
- Immunalysis Tapentadol HEIA
Tramadol
- ARK Diagnostics Tramadol Assay
- Immunalysis Tramadol HEIA
UR-144 / XLR-11
- ARK UR144/JWH-018 Assay
- Immunalysis Synthetic Cannabinoids-2 HEIA
Zolpidem
- Immunalysis Zolpidem HEIA
ARK High Sensitivity Benzodiazepine II Assay

The ARK HS Benzodiazepine II Assay is a homogeneous enzyme immunoassay for the determination of benzodiazepines in human urine. The assay efficiently detects classic and designer benzodiazepines and the 7‑amino and glucuronide metabolites without pre‑treating samples, thus minimizing false negative benzodiazepine screening results.
Assay Characeristics
- Excellent sensitivity and specificity for the detection of both classic and designer benzodiazepines and their metabolites
- Cut-off concentrations at 100 and 200 ng/mL
- No addition of b-glucuronidase required
- Liquid stable, ready-to-use reagents, calibrators, and controls
- Application protocols for all major clinical chemistry analyzers
Background
Benzodiazepines belong to a large class of drugs that depress the central nervous system and are known as sedative-hypnotics. They are used as anxiolytics, sleeping pills, anticonvulsants, and muscle relaxants but are also frequently used as pre-anesthetic medication and to supplement, induce, and maintain anesthesia.
Chronic benzodiazepine use can lead to physical dependence, with withdrawal symptoms such as insomnia, restlessness, irritability, and, in more severe cases, hallucinations, psychosis, and seizures.
Package Inserts