Unsurpassed Service & Support By a Real Person

Cornerstone Diagnostics has real people answering phones providing customer service 24 hours per day. The customer service team has over 50 years combined experience.

• Immediate assistance on a daily basis
• Solves problems quickly
• Ensures compliance

Proven Quality & Accuracy

Cornerstone Diagnostics was founded by physicians as a provider's complete toxicology resource, so you can count on our dedicated, expert clinical and toxicology support in real-time, including:

• Results interpretation assistance
• Specimen status & test modification
• Compassionate patient services

CAP and CLIA Certified

Cornerstone Diagnostics is accredited by the College of American Pathologists (CAP), reflecting the impeccable quality of our testing services and processes. Our industry-leading technology, automated SPE methodology, and toxicology expertise deliver reliable testing precision and results you can trust.

Timely Results

As a clinician, you are on the front lines of the battle against prescription and illicit drug abuse - waiting several days for a complete result from other labs doesn't make your vigilance easier. Cornerstone Diagnostics rapid turnaround times for our testing means providers can expect results fast - typically the next business day.

Low-cost testing & billing integrity

Cornerstone Diagnostics is a leader in responsible healthcare coding and billing. We work hard to ensure our testing services are affordable and available for all patients. Cornerstone Diagnostics is in-network with most major insurance plans and accepts all insurance & worker's compensation plans.

Trained Experienced Collectors

Our collectors go through a training program and background checks to ensure the safety and validity of testing. The current team of collectors has over 45 years of experience.

• Male and Female collectors
• Fast and accurate collecting

Provides customers with direct connectivity with EMR/HER

The technical team works closely with all departments to ensure accurate fast reporting of test results.

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• Fast and accurate reporting

Premium Reference Lab 2 Lab Services

Corner Stone Diagnostics is a trusted provider of reference laboratory services to independent and hospital labs across the country. Superior testing options and services for your lab, to help optimize utilization and cost efficiencies:

• Cutting-edge technology and automated methodology
• Extensive testing menu of illicit and prescription drugs
• Industry-leading rapid turn around times & STAT testing
• Personalized service & support in real-time
• Low cost solution