Fast, Confidential DOT

& Non-DOT Drug Testing

Serving Columbia, SC with mobile and in-office testing, employer programs, random consortium management, and 24/7 post-accident response. Additional services include hair testing, DNA/paternity testing, fingerprinting, and background checks for employers and individuals.

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DOT & Non-DOT Drug Testing Services

  • Laboratory technician with face mask and gloves working at a bench with test tubes, medical equipment, and test forms for drug testing.

    Urine Drug Testing

    A reliable and widely used method for detecting recent drug use through a urine specimen. Available for both DOT-regulated and Non-DOT testing programs, depending on employer and testing requirements.

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  • A healthcare worker in a face shield and gloves prepares a urine sample for testing while a man observes in a medical office.

    Rapid / Instant Drug Testing

    Fast drug screening designed to provide preliminary results quickly. Ideal for employers who need convenient and efficient testing for workplace, pre-employment, or other screening purposes.

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  • A female scientist in a lab coat, hair net, and gloves is holding a plastic bag with a strand of hair, smiling. A woman sitting at the table is watching and smiling in a medical or laboratory setting.

    Hair Drug Testing

    Hair follicle testing provides a longer detection window than urine testing and can help identify patterns of drug use over an extended period. This option is commonly used when a longer testing history is desired.

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  • A doctor and a woman talking at a reception desk in a medical office.

    Oral Fluid Drug Testing

    A convenient, non-invasive collection method using an oral fluid sample. Oral fluid testing can provide a shorter detection window and is useful for situations where a quick and convenient collection is preferred.

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  • Alcohol Testing

    Alcohol Testing

    Alcohol screening helps employers identify the presence of alcohol in accordance with applicable workplace policies and testing requirements. Testing options may include breath alcohol testing and other approved methods.

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  • Health worker in PPE conducting a COVID-19 nasal swab test on a construction worker at a construction site with a health services van and construction workers in the background.

    Mobile & On-Site Testing

    Convenient testing brought directly to your workplace, job site, or designated location. Our mobile services help minimize employee downtime and make it easier for businesses to manage testing requirements.

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  • A nurse in blue scrubs shaking hands with a man in a safety vest and hard hat at an industrial site at night, with emergency vehicles and industrial equipment in the background.

    24/7 Post-Accident Response

    Rapid response testing support following a workplace accident or incident. Our service is designed to help employers coordinate timely drug and alcohol testing when an incident requires immediate attention.

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  • A woman smiles as she hands a completed medical test to a man sitting at a desk. The man is receiving a test tube sample from the woman. The setting is a modern office or clinic with a glass wall and green plants.

    Pre-Employment Testing

    Screening services for employers who want to include drug and/or alcohol testing as part of their hiring process. Helps businesses maintain workplace policies and meet applicable testing requirements.

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  • A diverse group of people wearing safety vests in a warehouse listening to a man with glasses, who is holding a digital device, probably receiving instructions or training.

    Random Testing

    Random testing services help employers maintain an effective workplace testing program by selecting employees for testing without advance notice, according to the applicable program requirements.

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  • An office scene with a woman in a black blazer speaking to a man in a blue shirt, who is holding his forehead in distress at his desk.

    Reasonable Suspicion Testing

    Testing support for situations where trained supervisors or authorized personnel have documented, objective reasons to suspect possible drug or alcohol use in the workplace.

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  • A man wearing a white safety helmet, yellow reflective vest, and beige uniform receives a return-to-duty form and drug testing kit from a woman dressed in blue medical scrubs in an industrial warehouse setting.

    Return-to-Duty / Follow-Up Collections

    Testing collections for employees returning to safety-sensitive duties following a qualifying violation or other applicable circumstance. Follow-up testing can also be coordinated according to the required testing plan.

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  • Workers in safety gear inspecting documents in a manufacturing plant with a no smoking sign on the wall.

    Employer Drug-Free Workplace Programs

    Workplace testing program support designed to help employers establish and maintain drug-free workplace policies. Services can be tailored to an organization's industry, workforce, and applicable requirements.

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  • A diverse group of healthcare professionals in a discussion in a break room, with some holding medical markers and clipboard.

    Random Consortium Management

    We help coordinate random testing programs for employers and participating employees, including random selection and testing coordination based on the requirements of the applicable program.

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  • A happy family, including a toddler, receiving a checkup or vaccination from a smiling healthcare professional in a bright room with natural light.

    DNA/Paternity Testing

    Accurate and confidential DNA testing services to help establish biological relationships for personal, legal, or family-related needs.

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  • A man paying with his finger on a fingerprint scanner at an office reception area.

    Fingerprinting & Background Checks

    Convenient fingerprinting and background-check services are planned to support employment, licensing, and other verification needs.

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Why Choose Us?

Keep Your Business Compliant. Keep Your Team Moving.

Reliable Drug & Alcohol Testing for Today’s Businesses.

A1 Business Service Center provides professional DOT & Non-DOT drug and alcohol testing for employers in trucking, construction, healthcare, staffing, manufacturing, and more.

Skip the hassle and minimize downtime with fast, confidential, convenient testing delivered where you need it. From pre-employment and random testing to post-accident and return-to-duty services, our team helps make workplace testing simple and efficient.

  • Mobile & On-Site Testing

  • Confidential Results

  • DOT Testing

  • 24/7 Post-Accident Response

Protect your workplace. Simplify compliance. Get started today.

Schedule A Test
Get a quote
request employer services
Call now

Main Services

  • Advertisement for a drug and alcohol testing center showing a green truck, a building with a sign reading 'Testing Center,' a mobile testing van, and a person administering a breath alcohol test with a breathalyzer device, with various drug test kits visible.

    DOT & Non-DOT Testing Center

    We provide professional, compliant, and confidential drug and alcohol testing services for drivers, employers, and companies who must meet DOT standards.

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  • A medical courier and transport service setup with black vans branded 'Medical Courier & Transport' parked outside a hospital. The scene includes medical supplies, lab samples, and pharmacy goods being prepared for delivery. A person in a black uniform and face mask is organizing medical kits and bottles near an open vehicle trunk.

    Medical Courier Services

    We operate medical courier and transport services using sprinter vans and small vehicles to deliver medical supplies, lab samples, and pharmacy goods throughout South Carolina and neighboring areas.

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  • Digital advertisement for A1 Business Service Center, offering business solutions for entrepreneurs including formation, mailbox service, dedicated phone lines, office rentals, and administrative support. Features an office building, an interior view, and an entrepreneur on a phone.

    A1 Business Service Center

    We provide essential business solutions for startups and established entrepreneurs.

    Establish credibility from day one with our professional business and office services, giving your business the polished presence it needs to succeed.

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  • Green semi-truck with text about A1 trucking authority setup, listing services like MC and DOT registration, BOC-3 filing, and UCR registration, with American flag background.

    Trucking Authority Setup

    Our Trucking Authority Setup service is designed to help new carriers get legally registered and ready to operate with confidence.

    We handle the required filings and registrations accurately and efficiently, ensuring your authority is set up correctly from the start.

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  • A green freight truck on a road with a background of trees and profiles of documents and a person with a headset working on a computer with a dispatch map of the United States.

    Dispatching Service

    We offer transportation support service and hands-on training classes to help others start their own dispatching.

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  • A promotional flyer for A1 Training & Workshops in Columbia, SC, featuring classes on freight broker training, dispatch workshops, DOT testing, and medical business training, with images of classroom sessions, medical logistics, and online planning.

    Training & Workshops

    We host monthly training classes in Columbia, SC.

    All classes are interactive, hands-on, and designed to help attendees start and operate successful businesses immediately after training.

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Frequently Asked Question

  • You can book online on our Schedule an Appointment page, call us at 803-797-0197, or request a quote if you need mobile, after-hours or employer services. After you book, we'll confirm your appointment details.

  • We recommend booking ahead so we can have everything ready for you. Not sure? Call us and we'll tell you what's available.

  • Bring a valid photo ID and any paperwork or instructions from your employer or the requesting agency. If you received a form, reference number or order from the requesting party, bring it too.

  • Pricing depends on the type of test, the location, and whether you need mobile or after-hours service. Request a quote or call us and we'll follow up with pricing and scheduling.

  • Yes. We handle your information with care and share results only with the people authorized to receive them. Please don't include medical information when you book online.

  • DOT testing follows U.S. Department of Transportation rules and applies to drivers and other safety-sensitive transportation employees. Non-DOT testing is used for other workplaces, individuals and situations that aren't federally regulated. If you're not sure which one you need, ask your employer or call us before booking.

  • It depends on the type of test. Rapid screening results are usually quick, while laboratory results take longer. We'll tell you what to expect when you book.

  • Yes. We offer 24/7 mobile and after-hours testing. Call us at 803-797-0197 or request a quote, and we'll confirm availability.