Get Results You Can Trust,
Every Time.
Maintaining a drug-free workplace and meeting DOT regulations isn’t just a necessity—it’s an investment in your business’s safety and success. Our comprehensive drug and alcohol testing programs cover every need, from pre-employment screening to random and post-accident testing, for both DOT and Non-DOT regulated industries.
Your all-in-one testing solution
No matter the size of your business or the complexity of your testing needs, we have a solution for you. Whether you’re a small business making your first hire or a large corporation navigating complex DOT compliance, we make the process simple and reliable.
Urine testing
The most cost-effective method for detecting recent drug use. Fast, reliable, and hassle-free results that you can count on.
Breath alcohol testing
Instant results for detecting alcohol consumption. Ideal for post-accident or reasonable suspicion situations when immediate answers are critical.
Hair follicle testing
Need a wider detection window? Hair follicle testing traces drug use for up to 90 days—providing the insight you need for long-term patterns.
Oral fluid testing
A less invasive alternative to urine testing. Quick, accurate results with minimal risk of tampering.
Navigating DOT regulations? Let us handle it.
DOT compliance
Staying compliant with DOT drug and alcohol testing regulations can be complex, but we make it easy. Let us handle the details, so you can focus on running your business and keeping your employees safe.
Pre-employment testing
Start off on the right foot. Our pre-employment tests ensure your new hires meet all DOT requirements before they begin work.
Random testing
Maintain a safe and drug-free workplace with our randomized testing programs. We handle the logistics, so you can focus on your business.
Post-accident testing
In the event of an accident, we’ll help you meet DOT requirements quickly and efficiently with our post-accident testing services.
Reasonable suspicion testing
Address concerns with confidence. Our reasonable suspicion testing is legally defensible and helps you maintain a safe work environment.
Return-to-duty testing
Help your employees get back to work safely and compliantly with our return-to-duty testing services. We ensure they meet all DOT requirements.
Follow-up testing
Support your employees and maintain compliance with our follow-up testing programs. We’ll help you create a culture of safety and accountability.
Mobile on-site testing
Testing at your convenience—right at your doorstep. Our mobile drug and alcohol testing units are fully equipped and staffed by certified professionals, delivering accurate, efficient, and compliant testing right where you need it.
Your business deserves a partner, not just a provider
Why choose Preferred Alliance?
When it comes to drug and alcohol testing, experience matters. Preferred Alliance has been a trusted partner for businesses across the United States for over 30 years. We’ve helped countless companies navigate the complexities of DOT compliance and create safer, more productive work environments.
Industry veterans
With over three decades of experience, we’ve been at the forefront of employee screening since 1989, giving you the confidence to handle any testing needs.
Unwavering accuracy
Precision is everything. We work with certified labs and follow rigorous quality control measures to guarantee reliable results—every time.
Stress-free compliance
DOT regulations can be overwhelming. We make compliance simple, ensuring your testing program is always up-to-date and fully compliant.
True partnership
We don’t just provide a service—we build long-lasting partnerships, committed to helping you create a safer, more productive workplace.
Simple billing
No more headaches from multiple invoices. We offer one clear, consolidated bill for all your employee screening services.
Dedicated support
Our knowledgeable team is here to guide you every step of the way, offering expert advice and answering any questions you may have.
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A safe and compliant workplace isn’t just a choice—it’s essential. Our expert drug and alcohol testing services make it easy for you to protect your employees, meet regulatory standards, and avoid costly mistakes. With fast, reliable results and a nationwide network, we provide everything you need to create a drug-free workplace.
Act now, and let us help you safeguard your business with confidence.