Drug Testing Services in Fresno, CA

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Located in the lower region of California’s Central Valley, Fresno serves as the middleman for nearly a quarter of the produce grown in the United States. Consequently, transportation is a major Fresno industry.

Transportation companies help provide reliable access to food by executing timely deliveries. To ensure their employees can execute this important task, they need quality drug testing services.

At National Drug Screening, we offer fast, affordable and accurate drug testing services for companies and individuals. Our services help to promote safer workplaces and communities.

Drug Testing Services We Offer in Fresno, CA

Like other areas with a bustling transportation industry, Fresno has a need for high-quality drug testing services. The transportation industry is overseen by the Department of Transportation (DOT), which requires all DOT industry employees to undergo regular drug tests.

In addition to transportation, there is a large agricultural industry in the Central Valley area. This industry also relies on drug-free employees to safely operate harvesting machinery.

To help companies improve their safety protocols and maintain DOT compliance, we offer all the following services:

Workplace Drug Testing Services

Drug use in any workplace can lead to serious problems. Our workplace drug testing services reliably identify employees who are using drugs. With this information, you can make informed decisions regarding employment.

Immediate Drug Testing Services

Sometimes, you need to get drug test results quickly, like when there’s a workplace accident. Our immediate drug testing services provide for same day ordering of your drug testing. Our Fresno drug testing centers can also offer instant drug testing with same day negative results.

DOT Regulated Tests

Transportation industries under the DOT umbrella require employees to pass random drug tests. These DOT regulated tests screen for five banned substances, including THC, and must follow specific chain of custody procedures. We offer DOT-compliant tests that meet these requirements. We also offer compliant policies and required supervisor training.

Individual Drug Testing Options

There are situations where individuals need to order their own drug tests. Some common scenarios include:

  • Court orders
  • Academic admissions
  • Divorce proceedings
  • Child custody disputes
  • Probation requirements
  • Personal reasons


National Drug Screening provides individual screenings for these scenarios and more.

Common Drug Test Panels in Fresno, CA

California has legalized recreational cannabis use. However, many industries still maintain strict marijuana policies. Most notably, the DOT prohibits employees in the industry from using cannabis products of any kind.

Non-DOT or non-regulated employes need to be careful about testing for marijuana with urine specimens. Many of these companies have eliminated marijuana from the urine testing panel or switched over to oral fluid drug testing. Read more on the California law on marijuana testing.

To detect cannabis use, companies in Fresno need to use a variety of testing protocols that do not detect non-psychoactive cannabis metabolites; so, this rules out urine specimen testing for marijuana.

10-Panel Drug Test

The 10-panel test detects 10 different drug compounds, including Marijuana, Cocaine, PCP or Phencyclidine, Amphetamines, Opioids, Barbiturates, Benzodiazepines, Methaqualone, Methadone, and Propoxyphene. When we say DOT Like or Expanded Opiates, we are adding Hydrocodone, Hydromorphone, Oxycodone, and Oxymorphone.

Urine Sample Drug Testing

Urine sample drug testing services are widely used and easily administered. They can detect any drug compound within hours of consumption going back about 5 days. These tests work well for identifying drug use, as the body cycles through urine very quickly. With urine specimen drug testing there is not a detection of current impairment.

Hair Drug Testing

Hair follicle samples are used to detect long-past drug use. Drug compounds remain in the hair for months, making it difficult to hide any instances of drug use. The typical lookback period is 7 to 90 days. In California this testing would not be appropriate for employment testing for marijuana.

Oral Fluid Drug Testing

With oral fluid testing there is a short window of detection thus getting very close to detecting current impairment. Oral fluid drug testing is becoming very popular particularly in States like California where state laws protect individuals who use marijuana on their own time. Learn more about Oral Fluid Drug Testing.

Local Drug Testing Services in Fresno, CA

Undetected drug use in Fresno businesses can jeopardize coworker safety or lead to major product losses. Our drug testing services can help you cultivate a safer, more productive environment.

For more information, contact us at (866) 843-4545.

Drug Testing Services FAQ

What steps can I take to guarantee accurate and trustworthy drug test results?

To enhance your company’s drug testing program, follow the below steps:

  1. Choose a reliable drug testing provider: Research drug testing companies in Fresno to find a reliable provider with a robust suite of services.
  2. Clearly define your drug testing policy: Clear testing policies help employees understand the purpose of the tests and the consequences of a positive result.
  3. Train managers, supervisors, and HR team members: Properly trained HR staff can curb tampering attempts and improve internal communication.
  4. Use the correct drug testing method: Choose a screening method that detects the usage patterns and compounds that concern you most while being compliant with Federal and State laws. .
  5. Consider random drug testing: Random tests deter employee drug use more effectively than other testing schedules. These tests are impossible to predict and make it very difficult to hide drug use. DOT regulated employers are required to implement random drug testing.
  6. Maintain chain of custody: Clearly outline the chain of custody for drug test samples to prevent tampering during sample handling.


Follow these guidelines to achieve more trustworthy drug test results. With accurate results, you can make better employment decisions and inform future drug use prevention programs.

Two Easy Ways to Schedule your Drug Test Today:

Online Ordering with Fast Same Day Service:

Call today for testing locations: