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.

    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.

    Assisted Living Facilities

    Home Health & Hospice

    Long-Term Acute Care Hospital

    Skilled Nursing Facilities

    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

    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

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

    Priscilla Diosdado