Lab Testing You Can Rely On

Testing Menu

  • UTI

  • Lipid Panel

  • CBC

  • A1C

  • BMP

  • Vitamin B12

  • CMP

  • BNP

  • Vitamin D

  • TSH

  • Ferritin

  • PSA

  • PT/INR

  • Free T4

  • Urinalysis

View All

Why Partner With Us?

Quick Turn Around

Trust Your Lab Again with Our Industry-Leading Turnaround Times

Improve Patient

Improve Patient & Family Transparency with Rapid Online Test Results


Full-Service, Worry-Free Phlebotomy – We Come to You

Rapid Detection

We Provide Rapid Detection for UA/UTI, 7 Days a Week

247 Support

Never Again Struggle to Get a Hold of Someone – 24/7 Support

Integrity Is in Our DNA — Call Us at (832) 932-5968

Frequently Asked Questions

832-932-5968 or You will also be assigned a dedicated account representative and have their cell/personal email address.

Results are easily accessed through our intuitive online results portal.   Results are also faxed.

Yes, Principle Laboratory is able to create for patients and/or designated family members to review results.

Yes, Principle Laboratory offers UTI PCR testing and provides all supplies needed to collect and ship overnight direct to our lab.  Results are available within 24-48 hours or receipt at the lab.  STI PCR testing is also available.

We offer weekly phlebotomy service and employ a team of dedicated, experienced and friendly phlebotomists across Texas.  UTI samples can be collected and shipped via FedEX 6 days/week.

Yes, we offer STAT phlebotomy service in the greater Houston area.  Contact your account representative for more info!

Most lab results are available within 24 hours of receipt at our laboratory.

Partner Testimonials

… I must tell you, My team really bragged on the gentleman that came out yesterday to draw the labs we needed. In addition, the turnaround time was so fast and convenient. We are so glad to partner with you and your team…

Executive Director and Operations Support Parsons House Assisted Living Community

We were looking for a lab company that could meet our needs for fast service and fast results. Principle Labs has not disappointed us. Loren, our account rep, introduced us to their services and got us established as a customer quickly. She has been timely and responsive to all of our needs. The lab service is easy to use and the staff are friendly and professional. Results are received quickly and STAT services are delivered as promised!

Executive Director Silverado Hermann Park Memory Care Community

Get Started

(832) 932-5968

Owned & Operated Out of Texas

Serving the Following Cities

  • Austin, TX

  • Katy, TX

  • Beaumont, TX

  • McKinney, TX

  • Brownsville, TX

  • Plano, TX

  • Dallas, TX

  • San Antonio, TX

  • Ft Worth, TX

  • San Marcos, TX

  • Grand Prairie, TX

  • The Woodlands, TX

  • Harlingen, TX

  • Woodlands, TX

  • Houston, TX

View all Service Areas

We Support

Accredited By

Your Laboratory Should Care as Much as You Do

  • 24-48 Hour Turnaround for Labs & UTI
  • Proprietary UTI Collection Method
  • Dedicated Account Representative
  • Provider & Patient Quick Results Portal
  • Reliable Phlebotomy Visits
  • Extensive In-House Testing Menu
  • 24/7 Provider Phone Support

Unreliable is Unacceptable. Never Settle for Slow Turnaround Times & Poor Support.

Schedule a Call