Professional Drug Screening Services Inc.

Drug & Alcohol Testing

PDSS offers both DOT and Non-DOT drug and alcohol testing and collection services. All DOT testing complies with 49 CFR Part 40, specific DOT modal regulations and DHHS Specimen Collection Procedure Guidelines. PDSS recommends mirroring DOT regulations for your Non-DOT drug and alcohol testing programs as well. PDSS only uses SAMHSA Certified Laboratories to conduct all drug testing.

TPA Management

As your Third Party Administrator (TPA), PDSS can manage all, or part, of your drug and alcohol testing program. DOT refers to TPAs that manage DOT testing programs as “service agents.”


DOT Consortium

“Consortium” is defined by DOT’s FMCSA regulations as including, but not limited to, a group of employers who join together to administer DOT drug and alcohol testing programs. A Consortium is managed by a “service agent” referred to as a C/TPA. Consortia offer the ability for multiple DOT employers to pool together their DOT employees with other like companies to facilitate their random testing program.

Medical Review Officer

Required by DOT regulations and recommended for Non DOT, the MRO is a licensed physician, specializing in drug testing results. The MRO is an impartial “gatekeeper” responsible for receiving and reviewing the accuracy and integrity of laboratory results generated by an employer’s drug testing program and evaluating medical explanations for certain drug test results. The MRO determines if there is a legitimate medical explanation for a laboratory confirmed positive or other drug test results.

Professional evaluation

SAP Services

A Substance Abuse Professional (SAP) is a person who evaluates employees who have violated a DOT drug and alcohol program regulation and makes recommendations concerning education, treatment, follow-up testing, and aftercare. At PDSS, our SAP has more than 25 years of experience performing DOT Substance Abuse assessments as required by DOT.

FMCSA Clearinghouse

As your C/TPA, PDSS will assist you with navigating all aspects of the required DOT, FMCSA Clearinghouse. PDSS will manage your Clearinghouse program and provide all necessary training and additional information to assist you and your drivers with this program.


Collection Only

Collect Only Services include forensic chain of custody collection and shipment of the specimen to the laboratory of your choice via an overnight (or other) courier, with test results going directly from the laboratory to your company or your designated TPA. Professional Drug Screening Services is an approved collection site for most major Laboratories in the United States including LabCorp, Quest, and Clinical Reference Laboratories (CRL).


PDSS brings you both DOT-compliant and non-regulated Drug-Free Workplace Supervisor Training and Employee Drug and Alcohol education. PDSS incorporates your Drug-Free Workplace policies into this popular online training and provides a certificate of completion to each supervisor and employee that completes the training.

Background Screening

Professional Drug Screening Services, partners with Catapult, to provide compliant, web based, background checking services to our clients. PDSS knows you need these background checks as quickly as possible to make a confident hiring decision. We assist you with choosing the right package to meet your individual screening needs and provide you with timely, accurate and cost-effective results, along with outstanding personalized customer service to give you confidence and peace of mind.

DNA Paternity Testing

Over the years, PDSS has diversified to offer custom services including DNA paternity testing. DNA paternity testing is a method used to determine whether a man is the biological father of a child. We understand the sensitivity involved in this process and our expert team is to provide comprehensive, confidential and accurate testing solutions for our clients.

DNA Paternity Testing