• Welcome to P4 Diagnostix™


    P4 Diagnostix is a nationally recognized network of state-of-the-art laboratories specializing in best-in-class clinical, anatomical, and molecular diagnostic testing. We service long-term care facilities, ASCs and physician group practices with unparalleled access to connectivity, healthcare resources and consultative partnerships.
  • P4 Diagnostix™
    Consists of industry-leading companies, Theranostix, Long Island Pathology, Platinum Pathology, Metamark Laboratories, Know Error and P4 Clinical to include a national network of mobile phlebotomists operating in over 10 laboratory locations nationwide.
  • Personalized Medicine
    Customized to your needs

    Reliable, Timely, Accurate & Innovative Specialty Testing
  • P4 Diagnostix

    Represents a progressive pathway in healthcare focused on
    predictive, preventative, personalized, and participatory medical practice beyond diagnosing and treating disease.
Who We Are

A sophisticated alliance of national laboratories to include: Theranostix, Platinum Pathology, Long Island Pathology, P4 Clinical and Metamark Laboratories

What We Do

An industry leader in diagnostic services, offering superior testing services, advanced business solutions and cutting-edge information technology

How We Do It

Customized workflows adding efficiency, reduced costs, and optimize revenue while maintaining clinical excellence and ease of use.

About Us

We are a sophisticated alliance of laboratories: Theranostix, Platinum Pathology, Long Island Pathology, P4 Clinical and Metamark Laboratories

As an industry leader in diagnostic pathology, P4 Diagnostix offers superior testing services, advanced business solutions and cutting-edge information technology. Leveraging Cutting-Edge Cloud-Based Information Technologies. Offering Optimal Software and In-Office Ancillary Services