Urine Toxicology Lab

Harvest Labs Offers Quantitative Test Results For 80+ Drugs

What is Urine Toxicology?

Urine toxicology is the process of screening urine to determine the type and relative amount of legal and illegal substances a person has consumed. The test is performed to evaluate patients prior to receiving medicine therapy, patients in substance abuse recovery, patients displaying deviant drug behavior, obstetric patients, and patients using controlled medications. Toxicology tests, or tox screens, can detect a specifically targeted substance or up to 80 substances at once.

How does Urine Toxicology work?

Medical professionals obtain urine samples from patients using clean-catch midstream urine collection. The patient will need to have thoroughly washed hands before opening the collection cup. Before urinating, the patient will wipe the urethral orifice to ensure the sample is not contaminated with foreign materials. When the sample is collected, the laboratory technician, nurse, or physician will label the sample to be evaluated by Harvest Labs.

Our lab uses two types of urine drug screening, immunoassay and gas chromatography/mass spectrometry, or GC/MS. Immunoassay does not measure the substance levels individually. It detects whether the substance is in the system by measuring drug levels in nanograms per milliliter with either a positive or negative result. GC/MS is capable of measuring exact levels of the substance found in the sample and is typically used to confirm a positive result.

We Offer Test Results For The Following Drugs:


  • Amitriptyline
  • Clomipramine
  • Doxepin
  • Fluoxetine
  • Imipramine
  • Sertraline
  • Trazadone


  • Alprazolam
  • Clonazepam
  • Diazepam
  • Lorazepam
  • Temazepam
  • Oxazepam


  • Bath Salts Panel (Multiple Tests)
  • Cocaine
  • Cotinine (Nicotine Metabolite)
  • Ecstasy
  • Heroin (6-AM)
  • Marijuana (THC)
  • Methamphetamine
  • PCP


  • Carisoprodol
  • Pregabalin
  • Cyclobenzaprine
  • Gabapentin


  • Naloxone
  • Naltrexone


  • Buprenorphine
  • Codeine
  • Fentanyl
  • Hydrocodone
  • Hydromorphone
  • Meperidine
  • Methadone
  • Morphine
  • Oxycodone
  • Oxymorphone
  • Tapentadol
  • Tramadol


  • Ketamine
  • Zolpidem


  • Amphetamine
  • Methamphetamine
  • Methylphenidate
  • Phentermine


  • Creatinine
  • Oxidants
  • pH
  • Specific Gravity

Qualitative Drug Screen

  • Amphetamine
  • Barbiturates
  • Benzodiazepine
  • Buprenorphine
  • Cocaine
  • Methadone Metabolite
  • Ethyl Gluceronide
  • Opiates
  • Oxycodone
  • Phencyclidine
  • THC

Why Urine Testing?

  • Help prevent misuse, abuse, and diversion through responsible prescribing
  • Assist in evaluating a patient prior to controlled medicine therapy
  • Support substance abuse diagnosis
  • Monitoring of adherence to treatment plans
  • Identify undisclosed substances
  • Protect both patient and practice

Who Should Be Tested?

  • New patients already taking controlled medications
  • Candidates for controlled medicine therapy
  • Patients resistant to full evaluation
  • Patients requesting medicine by name
  • Patients in substance abuse recovery
  • Patients displaying aberrant drug behavior
  • OB patients at risk of harming themselves or child
  • Patients being monitored on controlled medicine

When Should You Test?

  • When considering controlled medication treatment
  • When dosing or medication treatment changes
  • In accordance with state or specialty guidelines/standards of care
  • In accordance with treatment agreement
  • Aberrant drug behavior
  Contact Us
Sales, Support, & Supplies:
(888) 975-7447
Phone Hours:
Mon - Fri 8:00 AM - 5:00 PM CST
Fax: (888) 511-8293