April 20, 2024

Types of Drugs Detected in Drug Screening

Drugs Detected in Screening

Drug screening is an effective strategy to maintain a safe and productive workplace. However, navigating the landscape of drug testing can be complex, particularly with the array of substances available.

Our Toxicology Department Offers:


Commonly Detected Substances


  • Drug Class: Central nervous system stimulant.
  • Necessity of Drug Testing: Amphetamines, including drugs like Adderall and methamphetamine, can have significant effects on cognition, alertness, and behavior. They can impair judgment and increase the risk of accidents, making testing essential in safety-sensitive positions.


  • Drug Class: Sedative Hypnotic.
  • Necessity of Drug Testing: Barbiturates, including butalbital, secobarbital and phenobarbital, can cause sedation and impair cognitive and motor functions. Testing is necessary, particularly in safety-critical roles, to prevent accidents and ensure employee wellbeing.


  • Drug Class: Central nervous system depressant, commonly used as tranquilizers.
  • Necessity of Drug Testing: Benzodiazepines, including drugs like Xanax and Valium, can cause sedation, drowsiness, and impaired coordination, which can compromise workplace safety and productivity.

Cannabinoids (Marijuana)

  • Drug Class: Psychoactive compound derived from cannabis.
  • Necessity of Drug Testing: Marijuana use can impair cognitive function, reaction times, and coordination, posing safety risks in various job roles. Additionally, and in accordance with the Medical Marijuana Act determination of impairment of a medical marijuana card holder while working in hazardous situations, the employee is required to test under 10ng/mL of THC in serum. At HNL Lab Medicine we provide this test to reduce any associated risks. 


  • Drug Class: Powerful central nervous system stimulant.
  • Necessity of Drug Testing: Cocaine use can lead to heightened alertness, euphoria, and increased energy but also carries significant risks such as impaired judgment, erratic behavior, and potential cardiovascular complications.


  • Drug Class: Drugs derived from opium, including morphine and heroin.
  • Necessity of Drug Testing: Opiate use can result in sedation, impaired judgment, and physical dependence, posing risks to workplace safety and productivity.

Phencyclidine (PCP/Angel Dust)

  • Drug Class: Dissociative anesthetic.
  • Necessity of Drug Testing: PCP use can cause hallucinations, distorted perceptions, and impaired motor function, presenting significant safety hazards in the workplace.


  • Drug Class: Synthetic opioid.
  • Necessity of Drug Testing: Methadone use can lead to sedation, drowsiness, and impaired cognitive function, potentially impacting workplace safety and productivity.


  • Drug Class: Synthetic opioid.
  • Necessity of Drug Testing: Fentanyl use can result in sedation, impaired cognitive function, and physical dependence, posing risks to workplace safety and productivity. HNL Lab Medicine tests for fentanyl and its metabolite norfentanyl. 

Other drugs:

  • We perform analysis for over 160 drugs that may not fall within the above drug classes. Please reach out to us for additional drug tests offered.



Validity and Confirmation Testing

  • Several drug profile options to best suit your business needs
  • Expanded drug test menu options 
  • Ability to speak directly with subject matter experts
  • Pre-employment testing, random drug testing for post-accident and reasonable suspicion
  • HNL Lab Medicine performs validity testing to confirm the integrity of specimens. This detects possible dilution or adulteration of the sample. The process of validity testing instills confidence in both employers and employees regarding the fairness and accuracy of the testing process.

    Confirmation testing is performed on positive samples to identify specific drugs and metabolites to provide a definitive result.


    Choose HNL Lab Medicine

    HNL Lab Medicine can help your business mitigate the reputational, financial, and safety risks associated with drug use. Our lab offers unparallelled expertise to help your workplace implement effective screening policies. 

    HNL Lab Tests Direct offers a variety of drug screening options that can be ordered through our platform, testing can be done at any HNL Lab Medicine Patient Service Center.

    We are also one of the only labs to offer serum THC testing to ensure your employees meet the requirements of both OSHA and the Medical Marijuana Act in Pennsylvania. Contact us at 1-877-402-4221 to discuss how we can assist you or visit our Toxicology department page to learn more about our offerings.