Clarity’s comprehensive drug free workplace program offers certified labs, collectors and medical review officers. Get the Clarity turnkey DOT compliance solution with onsite drug test collections, data management and industry-leading online reporting.

We want to help minimize the time your workers must leave their jobs for compliance needs. With our fully equipped Lab-mobiles that include full exam rooms and on-site drug screening equipment, we can meet your workers no matter the time or place.

Clarity Testing Services provides comprehensive background checks that help you know who you're hiring before you hire them. It should be your first consideration, and the centerpiece of how you organize your hiring.


Clarity Testing Services was founded in 1995 with the mission of providing high quality onsite testing services to comply with Federal DOT Drug and Alcohol Testing Regulations. As employers and labor demanded more and more safety and testing services onsite, Clarity responded by developing mobile models for high quality DOT Physicals, Respirator Medical Clearance and Certification Exams, Respirator Fit Testing, Blood Lead Testing and Lead Surveillance, Firefighter Physicals, Corporate Health Screenings, Vaccine Administration Programs, Hearing Conservation Programs and more.

learn more


Let us show you how onsite testing saves money.

<b>partnerships / alliances</b>

Associated Construction Contractors of New Jersey CCIA General Contractors Association of New York Construction Industry Council of Westchester & Hudson Valley and Building Contractors Association of Westchester & Mid-Hudson New York Structural Steel Painting Contractors Assoc.
International Brotherhood of Teamsters Laborers' International Union of North America Next Wave Safety Solutions International Union of Operating Engineers New York District Council 9

latest news

Clarity Testing Services - Drug and Alcohol Testing Tarrytown

WSJ Heroin Fuels Surge in New York City Overdoses

  Fatal drug overdoses across New York City jumped 66% from 2010 to 2015,... Read More
Clarity Testing Services - On-Site Drug and Alcohol Testing Tarrytown

NY Times On Drug Abuse

Stay updated with NY Times Drug Abuse Section and newly updated statistics. Clarity wants... Read More
Clarity Testing Services – On-Site Drug and Alcohol Testing Tarrytown

Workplace Drug Abuse: Signs And Prevention

Using drugs impairs decision-making abilities as well as physically impairs people. This is a... Read More
  • As an organization representing employers in need of substance and medical testing services, we strongly endorse Clarity Testing Services Inc. They have proven to be a valuable asset to business and workers.

    Ross J. Pepe, Construction Industry Council/BCA

  • The Clarity staff are professional, compassionate and understanding of the community and their unique needs. Clarity staff treat every patient as they are at a scheduled doctor’s appointment and explain their test results and give recommendations as to the best course of action going forward. The Clarity team has helped make our annual Asthma Screening and Education Day a success for the last 5 years!

    Sharon Scott, Community Relations Coordinator for TransCanada Corporation

  • Clarity’s model of bringing worksite has been a tremendous asset to our member unions and their signatory companies. They have always been available, flexible, and willing to go the extra mile to ensure the highest quality medical and customer service.
    They understand not only the construction and transportation industries, but also the nature of Labor-Management workplaces, through which they navigate beautifully.

    Edward Doyle, President, Building Trades Council

  • Clarity, its staff, technicians and medical providers have always worked well in the Labor-management workplaces in which we operate. They have shown flexibility and responsiveness in meeting our DOT and OSHA regulatory needs in the least invasive way possible, providing essentially turn-key service. We can recommend Clarity aggressively without the slightest hesitation.

    John Chrysogolos, Jr., Yonkers Contracting Company, Inc.