Our Services

At Great Expansion Enterprise LLC, we collaborate with clinicians, mental health professionals, rehab facilities, sports organizations, and legal teams to deliver seamless HIPAA -compliant clinical toxicology services. Our goal is provide accurate, efficient specimen collections and lab results that help you care for your clients with confidence.

Certified medical collector handling urine specimen for drug testing.

Clinical Toxicology Specimen Collection

Performed by trained professionals who uphold the highest standards of confidentiality, accuracy, and compliance. Each collection is conducted with care to ensure precise and reliable results for urine, oral fluid, and blood testing.

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

Comprehensive Lab Processing

We partner with certified laboratories to deliver precise and timely results you can depend on.

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

Custom Test Panels

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

A digital illustration of a DNA double helix with glowing blue strands against a dark background with particles.

DNA Testing Solutions

Discover accurate and confidential DNA testing solutions administered by professionals who ensure every collection meets strict legal and compliance standards. Whether for court-admissible testing or personal peace of mind.

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

Mobile/On-Site Services

Our certified collectors come directly to your location to maintain compliance, reduce downtime, and streamline the testing process.

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Why Choose Us

Expertise in Clinical Toxicology

Our staff is 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.

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Consultation & Needs Assessment

We begin by discussing your testing requirements in depth.

How It Works

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 certified specialists handle specimens professionally and arrange secure transport to the laboratory..

Lab Analysis & Reporting

We provide timely, straightforward results via our secure client portal.

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Payment Options

Transparent & Direct-Pay

No confusing insurance hurdles—just clear, upfront pricing for each panel or collection.

Payment Methods

Credit cards, direct invoicing, etc.