On-Site Testing Services in Denver, CO

Certified Collectors, Lab-Grade Standards, Delivered to Your Workplace

When you’re responsible for keeping a workforce safe and productive, sending employees across the city for drug and alcohol tests costs you time, money, and schedule stability. Fastest Labs South Denver brings certified collectors directly to your workplace so your team stays focused on the job.

We arrive with a clean, organized setup and handle everything from identity verification to chain-of-custody documentation, completing testing with as little disruption as possible. Our goal is to protect your business, support your policies, and keep operations on track while making the process comfortable for your employees. And because post-accident and reasonable suspicion situations don’t follow business hours, we’re available 24/7 for urgent on-site needs.

Every mobile visit follows the same documentation and collection standards you’d expect in one of our facilities, from certified collectors to full chain-of-custody procedures, supporting accurate, defensible results wherever you are.

Streamline your testing requirements with on-site drug and alcohol testing in Denver, CO. Call (720) 924-4333 or contact us online to get started.

Why Denver Employers Choose Fastest Labs South Denver for On-Site Testing

Coordinating testing around shifts, tight deadlines, and commute time is a real operational burden. Our mobile on-site testing removes it. Instead of pulling employees off the floor and sending them to a facility, we come to you at a time that fits your operation, including early-morning or off-peak windows.

Testing Programs Brought to Your Location

We regularly support pre-employment events, random testing cycles, reasonable suspicion situations, and ongoing programs for safety-sensitive positions. Whether you run a small business or a larger operation with multiple crews, we tailor each visit so employees can get back to work quickly. We serve employers throughout the Denver metro, including Greenwood Village, Centennial, Parker, and Lone Tree.

Organized Setup That Keeps Downtime Short

Our team arrives with everything needed for a clean, efficient testing area using your existing restrooms or a private space. Collectors from our Greenwood Village facility bring all supplies, secure storage, and forms, so you aren’t responsible for any technical details. Employees complete testing on site and return to their duties instead of spending time on the road.

Because our mobile collections follow the same standards as our facilities, you receive clear chain-of-custody records and results that support policy and regulatory review. We’ve built partnerships with nationally recognized laboratories, including Quest Diagnostics, LabCorp, DISA, Alere, Omega Laboratories, MedTox Laboratories, Clinical Reference Laboratory, Psychemedics, and ExperTox, so proven analytical resources back every collection.

How Our Mobile Testing Process Works

Start With a Scheduling Call

When you contact Fastest Labs South Denver, we begin by discussing your goals, how many employees you plan to test, and your timing requirements. Together, we pick a date and window that works with your schedule. Before the visit, we walk you through what to have ready, such as access to restrooms or a private check-in area, and keep instructions clear for both managers and employees.

Our Collectors Arrive & Handle Everything

On testing day, our collectors arrive, set up a clean and organized area, and call employees according to your plan. We verify identity, review required forms, and complete collections while maintaining confidentiality throughout. Employees typically spend only a short time away from their work area before returning to the job.

Sample Processing & Results Delivery

After collections wrap up, we handle packaging and transfer according to established chain-of-custody procedures. Each sample is tracked from collection through laboratory analysis, protecting the integrity of your results. You receive reporting in line with your program design, and our administrative team stays in contact so you know where things stand.

On-Site Drug Testing Options in Denver

Every workplace has different needs, which is why we offer several on-site drug testing options during a mobile visit. Our collectors can perform urine, oral fluid, and hair collections at your location, and we help you choose the approach that fits your policy and detection goals.

Detection windows differ by specimen type, and understanding those differences helps you choose the right method:

• Urine testing is the standard choice for pre-employment and random programs and typically detects use within the past few days.
• Oral fluid testing detects very recent use and works well for situations where directly observed collections are preferred.
• Hair follicle testing provides a window of approximately 90 days, making it useful when longer-term use patterns are a priority.

Many urine collections form the foundation of standard workplace programs, while oral fluid and hair options give employers additional tools depending on policy needs. For DOT-regulated programs, applicable regulations specify which specimen types are acceptable, so we encourage employers to confirm which methods align with their requirements. When you schedule on-site drug testing, we coordinate collection forms, identity checks, and secure handling so each sample is tracked from employee to laboratory.

On-Site Alcohol Testing for Denver Employers

Alcohol testing tends to come up in time-sensitive situations. In post-accident or reasonable suspicion scenarios, the time it takes an employee to travel off-site can affect both operations and the admissibility of results. Our on-site alcohol testing in Denver lets employers address these situations at the workplace quickly and consistently.

During a mobile visit, our collectors can perform alcohol screenings alongside drug testing or as a standalone service, depending on what your policy requires. We work with your designated contact to understand the reason for testing and help maintain a fair, documented approach. For safety-sensitive positions or roles covered by Department of Transportation regulations, we strive to align collections with applicable standards under 49 CFR Part 40, including identity checks and detailed documentation, so your program has support if results are ever questioned. Colorado employers retain the right to enforce alcohol-free workplace policies, and consistent, documented testing practices can help protect that position over time.

Ready to schedule on-site testing in Denver, CO? Call (720) 924-4333 or contact us online to talk through your options.