My name is Margaret McClair, and I am the founder of ClearPath Diagnostics. I specialize in on-site, mobile drug and DNA collections for individuals, families, and businesses throughout Charleston, SC, and the surrounding Lowcountry. I bring the testing process directly to your location—whether that's your workplace, jobsite, home, or a neutral meeting spot—eliminating the need for you to travel to a distant lab.
My certified mobile unit is equipped to perform a wide range of collections, including DOT and non-DOT drug testing, DNA/paternity testing, and wellness panels, ensuring confidentiality, chain of custody, and court-admissible results. Available 24/7 to accommodate your schedule and urgent needs, I provide a professional, discreet, and efficient alternative to traditional clinic-based testing.
Explore how I blend convenience with expertise, bringing rigorous mobile testing services straight to you. My swift drug and DNA testing solutions help ensure compliance and provide peace of mind. With services available 24/7, including in emergencies, I collaborate with you to effectively meet all testing requirements, respecting your needs and minimizing disruption.

I am available 24/7, ready to provide mobile drug and DNA testing at a moment’s notice. This commitment ensures that your testing needs are met promptly, whether it’s during standard hours or in an emergency, with no waiting rooms needed.

I specialize in serving B2B and B2G clients across industries, providing reliable and efficient on-site testing solutions. My services ensure minimal disruption to operations, catering to businesses and government entities who require swift, accurate, and professional testing services.

I offer virtual consultations to discuss your specific testing needs, providing personalized solutions at your convenience. This flexibility allows me to deliver tailored information and answers remotely, ensuring that my clients receive the guidance they need without the necessity of face-to-face meetings.