Principle Laboratory

Are you tired of:

  • Unreliable or unavailable mobile phlebotomy?
  • Using different labs for blood work and PCR testing?
  • Manually sending lab results to the off-site doctor?
  • Waiting on phone calls for critical results?
  • Working with a weekday only lab?
  • Looking for a paper fax that never arrived?

    Request a Call back





    Call – (832) 932-5968

    Lab Services

    Our expansive test menu covers everything from blood lab and microbiology to molecular and toxicology testing.

    Clinical Chemistry Testing

    We specialize in blood lab testing for providers including chemistry, hematology, and coagulation testing.

    Microbiology Testing

    We specialize in microbiology lab testing for providers including occult blood and rapid antigen testing.

    Molecular Pathology Testing

    Molecular Pathology lab testing is performed on samples to answer multiplex molecular instruments that simultaneously detect and identify nucleic acids from certain respiratory pathogens.

    Toxicology Testing

    PHS provides advanced screening and confirmatory equipment for urine and oral fluid toxicology testing for over 60 different drugs with a 72-hour turnaround time for results.

    Assay Menu

    Assay Menu

    Principle Laboratory specializes in a comprehensive suite of testing options including Blood, Molecular Pathology, and Toxicology.

    View Full Assay Menu

    Industries We Serve

    Principle Laboratory is the only all-inclusive end to end solution for home health, assisted living and pre/post-surgical laboratory services in Texas.

    Skilled Nursing Facilities

    Home Health & Hospice

    Assisted Living Facilities

    Long-Term Acute Care Hospital

    Drug & Substance Treatment Centers

    Physician Offices

    Reference Lab & Research Partnerships

    Partner With Us Today

    Join the PHS family for specialized laboratory testing and high-quality service delivered straight to you.

    • Molecular Pathology – 24 Hours
    • Lab Open 24/7/365
    • HL7 Integrations
    • Toxicology – 72 hours
    • User-Friendly Physician Portal
    • Custom Text & Email Alerts
    • Core Lab – 3 Hours
    • Easy-to-Use Patient Portal
    • Robust Mobile Phlebotomy Team

    Customer Testimonials

    I would have to say that working with this company has been AMAZING! My rep is exceptionally FANTASTIC in coordinating you with the proper people to obtain any itemized billing and records needed, she has DEFINITELY made my job so much easier! Thank you!

    April Onofre

    Started a relationship with Principle last year with Touchstone Communities in our Houston area Communities. That was the start. This was followed with our new company, ML Healthcare. We wanted to continue this partnership with Principle in our new facility, Cypress Pointe Health and Wellness. Working with Principle has been great! They are true Partners in our healthcare facilities. Our organization values our relationship with Principle, and we look forward to continuing this relationship in our new facility – Sylvan Shores Health and Wellness.

    Lee Rivaz

    Our Skilled Nursing Facility has used Principle Health Systems for the past three years. I have never reached out to them for assistance that I wasn’t able to connect with someone right away. They have skilled professional staff that provide excellent customer service and communication.

    Karen Johnson

    Fast and Friendly Service! Thank you Principle Health for keeping everyone safe during the testing process with your thorough cleanliness standards.

    Priscilla Diosdado

    Principle has provided great services for our companies. We provide drug and alcohol treatment services, so timeliness with tox results is extremely important. We have always found Principle and their staff to be highly professional, responsive and efficient. We strongly recommend partnering with Principle and their team for your company’s service needs.

    Joe Gardzina

    Great company to do business with. They have serviced my community and the residents and family were beyond pleased with their services!

    Brittney Richardson

    This is a top-notch lab that goes above and beyond our needs at our clinics. They have met our every need and taken the time to educate the staff whenever the need arose.

    Estella Rabbani

    Principle Health Systems is a very professional establishment that truly believes in customer service within and without of the organization. They are concerned about the needs of their patrons and believe in rectifying any matter with a positive lasting solution. They have amazing staff and awesome management which explains why they appear to be so successful.

    Kimberly Ferrell

    Fast and Friendly Service! Thank you Principle Health for keeping everyone safe during the testing process with your thorough cleanliness standards.

    Priscilla Diosdado

    Amazing company. The staff are complete pros and take care of their patients. Wouldn’t hesitate to recommend!

    David DeCasper