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Research Explained7 min read

Understanding Clinical Trial Endpoints: Primary, Secondary, and Surrogate

By Tidera Health Editorial Team·

When a trial reports results, everything hinges on its endpoints. Here's how to understand what was measured and whether it matters to patients.

About this article: Educational and informational only. Does not constitute medical advice or eligibility guidance. Always discuss clinical trial options with your care team. Verify current trial status at ClinicalTrials.gov.

What You Need to Know

What are clinical trial endpoints? This guide explains primary endpoints, secondary endpoints, surrogate endpoints, and how they determine whether a trial succeeds or fails.

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How Tidera Health Can Help

Tidera Health searches ClinicalTrials.gov in real time and uses AI to explain which trials may be relevant to your condition, age, location, and treatment history. It's free, requires no account, and stores no health data.

Enter your condition and location to see currently recruiting trials matched to your profile — with plain-English eligibility explanations and questions to ask the research coordinator.

Topics

clinical trial endpointsprimary endpointsecondary endpointsurrogate endpointclinical trial outcomes

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Enter your condition, age, and location. We search ClinicalTrials.gov in real time and explain each trial in plain English. Free, no account required.