We Are Your PREMIER Solution For Your Company’s Drug & Alcohol Testing Needs
We Fully Understand The Sensitive Nature Of Drug And Alcohol Testing And Maintaining Confidentiality For Your Employees Is Our Top Priority.

Built on a foundation of honesty and integrity, businesses large and small have turned to us for over 40 years for all of their DOT and non-DOT drug testing and Supervisory training needs.
Because of this, Preferred Alliance, Inc. is the premier drug testing solution for companies nationwide.
We offer a comprehensive third-party, multi-panel drug screening that helps you, the employer, keep your company and employees in compliance while mitigating your risks to a safe level.
Ask us about our consolidated billing options. We simplify the process by adding all of your services to one invoice, which saves you time & money!
Call us today at (877) 272-5227
The Right Tools For The Right Solution. Every Time.
We fully understand the sensitive nature of drug and alcohol testing and are committed to making confidentiality for the employee our top priority. That is why we offer an in-depth employer training program tailored to your business that will educate your business leaders on the proper regulations and implementation of compliance testing.
If your business has any kind of transportation service, we can help your employees locate highly reputable, and qualified CME’s to administer DOT Medical Examinations. Coupling our unparalleled industry knowledge with the fact that we have partnered with some of the premier vendors in the industry, allows us to tailor a DOT and Non-DOT testing services plan and a supervisory training program that’s perfect for everyone from a small local company to a large national business.
Below, is a sample of what you as a business owner can expect from Preferred Alliance.

Drug Testing Services We Offer Employers
Drug testing can seem intrusive but is required by DOT for any business where transportation is involved. Preferred Alliance keeps up on federal regulation changes to ensure that companies maintain compliance throughout each calendar year.
We support our clients by providing current training requirements with regards to their employees and supervisory staff. With our focused knowledge of the Omnibus Transportation Employee Testing Act, Preferred Alliance offers the necessary tools to educate and administer your drug-testing program.
Employers know that having a clean drug and/or alcohol test for their company operators will save them from future issues, including potential litigation. Whether you have someone applying for work or already employed; Preferred Alliance will go the extra mile for you with comprehensive drug screening panels that may include methadone, barbiturates, propoxyphene or semi-synthetic drugs such as Oxycodone, Oxymorphone, Hydrocodone, and Hydromorphone.
This is just one reason why Preferred Alliance operates as one of the strongest and most experienced drug testing programs in the country.
Do you know what training is mandatory or how to handle a situation where you must order a Reasonable Suspicion test for one of your employees based on their altered behavior or performance level? As supervisors, it becomes incumbent upon them to know how to handle these situations and that is why Preferred Alliance takes training for supervisors and your staff very seriously.
We offer a multitude of Supervisory training solutions for you to choose from. From a hands-on interactive training course in Lathrop, California, to on-site training at your facility for groups of 5 or more, to online training that meet all applicable requirements of federal regulations, we’ll show your Supervisors what to look for and how to handle any issues that arise in a courteous, professional, and federally compliant manner.
The Federal Motor Carrier Safety Administration makes it their top priority to ensure the physical, mental, and emotional well-being of each CMV Operator in order to ensure the safety of all those who share the road. Part of this priority entails the regular administration of DOT Medical Examinations, more commonly known as DOT Physicals.
Because of the vast array of regulations surrounding a Driver’s ability to safely perform their job, ONLY a DOT Certified Medical Examiner (CME) can do a full scope examination. Preferred Alliance, Inc. can help you and your drivers stay in compliance by assisting you in locating a CME that can perform fair and consistent DOT Physicals to keep your business running and your employees on the road.
Some Words From Our Clients
“Merced County Schools Insurance Group has contracted with Preferred Alliance since DOT-compliance for our Member District’s commercially licensed drivers. The program has been seamless, and without exception, perfectly compliant and trouble-free.”
“DOT regulations are very complex with plenty of gray areas – one mistake can close us down. Preferred Alliance’s timely response and accurate information on how to manage the testing process has helped us achieve ‘letter-perfect’ compliance. We have had a great relationship for almost 10 years – there’s no reason to consider anyone else.”
“I have had the pleasure of working with Preferred Alliance for our seasonal drug testing needs since 1998. In our industry, we place high demands on our testing providers for flexible scheduling, quick turnaround, and competitive pricing. Preferred Alliance has consistently exceeded our expectations.”