At Guardian Testing Solutions, we provide reliable and DOT-compliant drug and alcohol testing services to ensure that businesses in the transportation industry remain in full compliance with FMCSA and DOT regulations. Our services are tailored for owner-operators, trucking companies, fleet managers, and all safety-sensitive employees who must meet federal testing requirements.

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We offer a comprehensive range of testing solutions, including pre-employment, random, post-accident, reasonable suspicion, and return-to-duty testing. Whether you need on-site mobile testing, consortium program management, or individual screenings, our certified team delivers fast, accurate, and hassle-free services to keep your business running smoothly.

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With testing locations in California and Nevada and a nationwide network of collection sites, Guardian Testing Solutions makes DOT compliance simple, convenient, and cost-effective.