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  1. Function | 100 Healthy Years

    It’s time you own your health. Function includes 160+ lab tests and personalized protocols for instant action. Tracked over time in one secure place.

  2. Functional testing - Wikipedia

    As a form of system testing, functional testing tests slices of functionality of the whole system. Despite similar naming, functional testing is not testing the code of a single function. The …

  3. Functional Testing : Definition, Types & Examples - Testsigma

    Functional testing is a type of software testing that verifies a system’s features and workflows work according to business requirements by checking inputs, outputs, and behavior. In simple …

  4. What is Functional Testing? Types & Examples - Guru99

    May 17, 2024 · Functional testing is performed using the functional specification provided by the client and verifies the system against the functional requirements. Non-Functional testing …

  5. Functional Testing : A Detailed Guide (2026) | BrowserStack

    Dec 25, 2025 · Run functional tests seamlessly across browsers and devices using BrowserStack. Most teams use functional testing to confirm that features work as expected. I …

  6. What Is Functional Testing: In-Depth Guide With Example

    Nov 6, 2025 · Learn about functional testing and its types, techniques, tools, and processes to validate the software application's effectiveness. Functional testing is a type of testing that …

  7. How It Works | Function

    Advanced add-on tests reveal hidden risks and deeper insights to guide your health decisions. Detects cancer signals across 50+ types of cancer as early as Stage 1. Scans for a broad …

  8. FAQ | Function

    Find answers to common questions. How do I join Function? It’s quick and easy. Just click here. Who can sign up for Function? Everyone 18 or older—except those who are currently …

  9. What We Test | Function

    Scan for hundreds of potential conditions each year—before symptoms appear—including cancer, stroke, aneurysms, brain, uterine, prostate, neurological, and skeletal issues, with MRI scans …

  10. Guides | Function

    Function offers 160+ lab tests for the whole body including thyroid, hormones, fertility, autoimmunity, heart, kidney, liver and more.