On site drug testing – We come to you Houston, TX
We Come To You
Land, Air & Sea
Accredited Drug Testing provides reliable, fast, and confidential on-site and mobile drug testing services at your workplace, accident scene, or remote job location available 24/7 nationwide. Whether you're an employer looking to test employees at your facility or need emergency post-accident testing, our mobile collectors come to you with all required supplies and documentation, ensuring compliance and minimal disruption.
We provide onsite drug and alcohol testing for all DOT modes including FMCSA, USCG, FAA, FRA, PHMSA, FTA.
Who Uses Our On-Site Drug Testing?
Manufacturing Plants
Power Plants
Car Dealerships
Trucking/Transportation Companies
Oil & Gas Sites
Hospitals
On-Site Testing Events Require a Minimum of 10 Individuals or More To Be Tested
On-Site Drug Testing in Construction Sites
Accredited Drug Testing offers specialized drug and alcohol testing solutions for construction companies to enhance site safety, reduce liability, and meet compliance. From small crews to large multi-state projects, including in Houston, TX, our vast network covers your testing needs quickly and reliably.
On-Site Drug Testing in Manufacturing Plants
Accredited Drug Testing delivers industry-specific drug and alcohol testing services for manufacturing facilities across Houston, TX and nationwide. Our solutions help safeguard the workforce, boost productivity, and ensure OSHA, DOT, and insurance compliance.
On-Site Drug Testing in Power Plants
On-site drug testing is vital for power plants to ensure safety, regulatory compliance, and reliability, especially in Houston, TX. High-risk environments demand no tolerance for impairment to avoid accidents, machinery failures, and life-threatening incidents.
On-Site Drug Testing in Motor Pool Facilities
Motor pool facilities manage fleets for agencies, utilities, and big organizations. On-site drug tests, especially relevant in Houston, TX, maintain a safe, compliant environment, minimizing downtime and improving operational efficiency for vehicle operations.
On-Site Drug Testing for Car Dealerships
On-site drug testing at car dealerships ensures a safe, drug-free workplace. Employees handling vehicles or tools or engaging with clients in Houston, TX benefit from reliable testing, reducing accidents, protecting reputation, and maintaining policy compliance.
Why Car Dealerships Need Drug Testing
- Convenient and Time-Saving: Testing is done on-site with no need to send employees off-premises
- Minimizes Workflow Disruption: Employees can return to work quickly after testing
- Cost-Effective: Reduces travel costs and time away from sales or service operations
- Discreet and Professional: Certified collectors arrive with proper equipment and conduct testing confidentially
- Check-In Process Employees or participants are called in, verified with ID, and briefed on the testing process.
Types of On-Site Testing Available
- Urine Drug Testing: 5, 10, or 12-panel options for common illicit and prescription drugs
- Oral Fluid (Saliva) Testing: Observed collections with short detection windows
- Hair Follicle Testing: Long-term detection up to 90 days—ideal for management roles
- Breath Alcohol Testing (BAT): Instant results to detect recent alcohol use
- Rapid/Instant Testing: Fast screenings with optional lab confirmation
Protect your employees, your customers, and your bottom line with professional on-site drug and alcohol testing services. Accredited Drug Testing offers fast, flexible, and affordable solutions for car dealerships of all sizes
On-Site Drug Testing for Trucking and Transportation Companies
On-site drug testing for trucking and transportation firms in Houston, TX ensures compliance, public safety, and seamless fleet operation. Whether overseeing long-hauls, deliveries, or logistics, on-site testing offers a convenient, cost-effective, compliant service.
On-Site Drug Testing for Schools
On-site drug testing at schools in Houston, TX helps sustain a safe, drug-free environment. Whether public districts, private academies, or charters, testing promotes student health, ensures policy adherence, and supports smooth school operations.
On-Site Drug Testing at Oil and Gas Sites
On-site drug testing is crucial for safety in the high-risk oil and gas industry, such as in Houston, TX, ensuring peak performance from rigs to refineries. Our 24/7 mobile tests adhere to federal and industry standards, minimizing downtime at remote sites.
Planning or participating in an on-site drug testing event? Accredited Drug Testing provides services to employers, safety managers, or employees, knowing what to expect during an on-site drug testing process helps ensure a smooth, compliant, and stress-free experience. As a drug testing subject matter expert, Accredited Drug Testing provides professional, DOT-compliant mobile testing services designed to be efficient, confidential, and fully customizable to your organization's needs.An on-site testing event involves certified collectors traveling to your location, such as a workplace, job site, terminal, school, or event venue to perform drug and alcohol tests. This service eliminates the need to send employees off-site and minimizes downtime while ensuring compliance with drug-free workplace policies, DOT regulations, or legal requirements. These events can range from single-day testing for small teams to multi-day operations across multiple shifts or job sites.
- Determine the scope of the testing event (number of employees, shifts, locations)
- Choose the appropriate test types (urine, oral fluid, hair, alcohol)
- Coordinate scheduling to minimize operational disruption
- Provide chain of custody forms, employee notices, and privacy procedures
- Complete and required Chain of custody paperwork
- Setup and Arrival: Certified collectors arrive with testing kits, paperwork, and privacy screens. Setup may occur in a designated private area, conference room, trailer, or mobile unit.
- Check-In Process: Employees or participants are called in, verified with ID, and briefed on the testing process.
- Collection Procedures: Collections begin utilsing proper collection protocols and procedures based on your testing event requirements or regulations. Every sample is documented using strict Chain of Custody Procedures (CCF) to ensure accuracy and legal validity.
- Completion and Wrap-Up: Participants return to work after testing. All samples are sealed and transported to certified laboratories (if not rapid tests). Results are reported to the employer or DER in compliance with Confidentiality and DOT confidentiality requirements.
- Choose a certified provider with DOT experience and trained collectors
- Communicate clearly with your staff ahead of time (when applicable)
- Designate a private, accessible space for testing and check-in
- Have HR or a DER on-site to assist with any employee concerns
Why Choose Accredited Drug Testing?
- Certified collectors, BAT technicians, and MROs.
- DOT and non-DOT program management
- 24/7 on-site testing availability nationwide
- Over 17,000 backup testing locations
- Customized employer programs and full compliance support
- Trusted by federal contractors, transportation companies, and Fortune 500 firms
Schedule Your On-Site Drug Testing Event Today
Whether you are planning a random drug test, pre-employment screening, or DOT-mandated testing event, Accredited Drug Testing delivers fast, professional, and compliant on-site drug and alcohol testing services. Call (800) 221-4291 or visit or click the button below to schedule a drug testing event or request a free quote.
Request On-site Mobile Testing