Evidence explainer

How to read peptide studies

A checklist for separating mechanisms, animal findings, pilot human work, and strong clinical evidence.

Checklist

Start with the population

A study in healthy volunteers, a disease population, animals, or cells answers different questions.

Check the comparator

A controlled trial tells you more than an open-label study, case report, or anecdote.

Separate route and formulation

Evidence for one route does not automatically apply to another route, such as topical, oral, intranasal, IV, or injectable use.

Keep outcomes specific

Mechanism markers, surrogate endpoints, symptoms, imaging, and hard clinical outcomes answer different questions.

Sources

  1. 1.

    FDA. Compounding and the FDA: Questions and Answers 2026.

    Accessed 2026-06-08.

    FDA explains that compounded drugs are not FDA-approved and that FDA does not verify their safety, effectiveness, or quality before marketing.