Who We Serve & Why It Matters

At Great Expansion Enterprise LLC, we coordinate testing solutions for employers, legal teams, clinicians, rehabilitation programs, and individuals seeking structured, HIPAA-compliant services. Through our trusted network of certified collection partners and laboratories, we streamline the testing process with organized case management, accurate documentation, and reliable program oversight designed to support confident decision-making.

Key Services

Certified medical collector handling urine specimen for drug testing.

Advanced Clinical Toxicology Services

Coordinated through a trusted network of certified collection partners and laboratories that maintain the highest standards of confidentiality, accuracy, and compliance. Each case is managed with structured oversight to support reliable urine and oral fluid testing programs.

Mobile Clinical Toxicology Collector completing chain-of-custody form from a DOT or non-DOT urine specimen collection.

Customized Testing Solutions

Tailored to the needs of clinicians and rehab centers, covering a wide range of substances or medications

State-of-the-art laboratory used for clinical toxicology and DNA testing.

Drug Testing Services

Comprehensive DOT and Non-DOT testing programs coordinated through certified collection sites and mobile partners for workplaces, legal matters, and individual needs. We manage pre-employment, random, post-accident, reasonable suspicion, return-to-duty, and follow-up testing with structured program oversight.

Closeup of client having DNA specimen collected by trained collector.

DNA Testing Solutions

Access accurate and confidential relationship DNA testing coordinated through professional collection partners who follow strict legal and documentation standards. Ideal for court-admissible testing or personal informational needs with guided case management.

Peekaboo® Early Gender Detection

Celebrate an exciting milestone with early gender reveal testing coordinated through our trusted network of professional collection partners and laboratories. This simple blood-draw service is guided with easy scheduling, supportive communication, and secure case management for a smooth and comfortable experience.

Non-Invasive Prenatal Paternity (NIPP)

Gain early clarity with prenatal paternity testing coordinated through experienced collection partners and accredited laboratories. This non-invasive blood-draw service is designed to provide a smooth, respectful experience with organized case support, clear communication, and secure documentation every step of the way.

Aerial view of downtown St. Louis and Metro East Illinois area served by Great Expansion Enterprise LLC.

Mobile/On-Site Services

Qualified independent collectors provide testing at your location or at one of our partner collection sites. We ensure compliance, reduce downtime, and streamline the testing process.


Why Choose Us

Expertise in Clinical Toxicology

Our network of independent collectors are trained in advanced specimen handling and safeguards that preserve result integrity.

HIPAA-Compliant & Confidential

We fully understand the sensitivity of toxicology testing and uphold rigorous patient privacy standards.

Rapid Turnaround

Our network of reputable laboratories ensures you receive results promptly, supporting timely treatment choices.

Flexible & Scalable

From solo practitioners to extensive rehabilitation facilities, we customize our services to meet your specific needs and workload.

How It Works

Consultation & Needs Assessment

We begin by discussing your testing requirements in depth.

Choose Your Toxicology Panel

We work with you to select a panel that covers the substances, medications, or risk factors you’re concerned about.

Collection & Delivery

Our network of certified independent collectors handle specimens professionally and arrange secure transport to the laboratory..

Lab Analysis & Reporting

We provide timely, straightforward results via our secure, confidential methods.

Payment Options

Transparent & Direct-Pay

  • Simple, transparent pricing with no hidden fees or insurance confusion — just clear costs for your testing coordination and collection experience.

  • Payment is required prior to scheduling. All services are scheduled in service windows.

  • Volume-Base Discounts Available.

    Additional services (e.g., after-hours/weekends, mobile collections, confirmatory testing, etc) incur additional fees.

Payment Methods

We accept payments exclusively via debit or credit card.

*Invoicing is available for qualifying accounts.

Healthcare provider submitting electronic payment for clinical toxicology or DNA testing services through Great Expansion Enterprise LLC's website.

Frequently Asked Questions (FAQs)

1. How quickly are lab results available?

Turnaround typically varies from 1 to 2 days, depending on the test panel.

2. Is on-site collection possible for our clients?

Yes. We coordinate mobile collections to accommodate clients at your chosen location.

3. Do you handle specialized toxicology requests?

Absolutely. We can create custom panels for specialized needs, such as opioid monitoring or medication compliance.

4. What if I need a chain-of-custody for legal cases?

Our network independent collectors follow strict industry protocols to ensure your results meet legal standards.

Ready to simplify clinical toxicology testing for your practice or organization?

Contact Us Today!

Prefer to call? Reach us at 618-746-9711 or email at info@greatexpansionent.com