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How is Eligibility Determined?

1 min read
Last updated: October 28, 2025

Every clinical trial has two sets of rules:

  • Inclusion criteria: the traits or conditions you must have to participate.
  • Exclusion criteria: the traits or conditions that prevent you from participating, usually for safety or scientific reasons.

Eligibility may be based on

  • Age and gender
  • Diagnosis and disease stage
  • Current medications or treatments
  • Medical history (such as past surgeries or conditions)
  • Test results (like blood tests or imaging)
  • Lifestyle factors (such as smoking, alcohol use, or pregnancy)

Before you are enrolled, researchers will compare your information to the study’s criteria. If you do not qualify, it does not mean something is wrong, it simply means the trial is not the right fit.

Why these rules matter

  • They help keep participants safe.
  • They ensure the results of the trial are accurate and useful.
  • They protect against unnecessary risks or treatments that may not be suitable.

Key Note: DecenTrialz uses a secure pre-screening system to help assess your eligibility before referring you to a research site.

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How is Eligibility Determined?