Practice moving from a broad claim to an exact compound, a readable study result and its original source. The goal is a clear, appropriately limited answer you can explain in your own words. [1] [2]
What you will learn
- Choose between a compound profile, comparison and Study Finder for a specific question.
- Check that a source supports the exact material and complete claim being discussed.
- Write a short research answer that preserves the measured result and its uncertainty.
Turn a broad claim into a question
Begin with something specific you want to understand: what a named compound is, what happened in a particular experiment or whether studies have measured a proposed outcome in people. A broad phrase such as “peptides for recovery” mixes many molecules and many meanings of recovery. Tightening the question helps you recognize whether a page or study actually addresses it. [1] [2]
Write a provisional question with a material, a population or model and an outcome. For example: “What did a study of GHK-Cu measure in rat wounds?” That question is narrow enough to answer from the reported experiment. “Does GHK-Cu improve recovery?” would need you to define the kind of recovery, the people or model involved and the comparison. [3]
Choose a starting place in the library
Use a compound profile when you need the identity, biology and research findings together. Read the overview for orientation, then the findings and limitations for the experiments that support the account. Molecular fields can clarify the chain or form, while the references let you follow the scientific claims to their sources.
Use the comparison when you already have two or more named materials in mind. Read each answer as an explanation with its own sources. An identity comparison can show that two names refer to different forms even when their research areas overlap. An evidence-stage label describes the kinds of studies selected; the accompanying result is what tells you what those studies found.
Use Study Finder when your question starts with an experiment, a study setting or a measured outcome. Open the record to read beyond its preview and follow the original paper. A search result is a route to a selected report. Its presence does not mean that every paper on the topic has been collected or that the report answers every use of the compound.
Check the claim against the source
Compare the material in the page with the material in the paper. A fragment, a copper complex, a modified molecule and a mixture can have related names while remaining different tested materials. Next check the model, the comparator and the measurement. A source can be correct and relevant to one clause without supporting a broader sentence attached to it. [1] [2]
The title helps identify the paper, but the abstract and methods explain what was done. If only an abstract is accessible, keep its limits visible in your notes. You may be able to establish the species and main finding while still lacking the allocation, full harms assessment or details of a formulation. A source link makes those details traceable; it does not fill them in. [1] [2]
Write an answer that someone else can follow
Start with the experiment and the physical result. Then explain what the result contributes to the question and what remains unresolved. Keep a useful number with its unit, group or time point. If an estimate is uncertain, retain its observed direction while explaining that uncertainty. A sentence that says only “promising evidence” leaves the reader to guess what happened. [2] [4]
Finally, separate three situations in your notes: a study measured no clear difference; the study did not measure the outcome; or the accessible report did not provide the detail you need. These lead to different next questions. The first may require a more precise comparison, the second a different experiment and the third access to a fuller report. [1] [2]
Worked example: follow a GHK-Cu claim to its experiment
Suppose you encounter the claim “GHK-Cu repairs skin.” Begin with the GHK-Cu profile to identify the copper complex, then look for the wound study in its references or Study Finder. In the 1993 paper, Maquart and colleagues implanted mesh chambers under rats’ skin and introduced GHK-Cu or saline into them. They then analyzed the material that accumulated inside the chambers. [3]
A useful answer is: “Chambers given GHK-Cu accumulated more collagen and other connective-tissue material than saline control chambers in this rat experiment.” These components belong to the extracellular matrix, the structural material around cells. The experiment measured accumulation in implanted rat chambers; it did not measure the appearance of human skin or wound closure in people. [3]
The next question follows from the original claim: what relevant evidence measures healing or skin appearance in people using the specified material or formulation? The rat study supplies a reason to investigate that question. It has already taught you something concrete without being made to answer a different experiment. [3] [5]
Check your understanding
A comparison cites a structural paper beside a claim about less pain. What should you check?
You cannot find a human trial in a selected Study Finder search. What can you responsibly write?
Show explanation
State what you found within that search and its scope. A selected library search can leave a question unanswered; it cannot by itself prove that no study exists or that the compound has no effect. [2]
Key points
- Start with a defined question, then choose the profile, comparison or study record that can help answer it.
- Match every claim to the exact material, model and measured outcome in its source.
- Write the result and its limits concretely; distinguish missing evidence from a measured absence of a clear difference.
Sources and further reading
- Percie du Sert N et al. Reporting animal research: Explanation and elaboration for the ARRIVE guidelines 2.0. PLoS Biol. 2020;18(7):e3000411.
- CONSORT 2025 explanation and elaboration: updated guideline for reporting randomised trials. BMJ. 2025;389:e081124.
- Maquart FX et al. In vivo stimulation of connective tissue accumulation by the tripeptide-copper complex glycyl-L-histidyl-L-lysine-Cu2+ in rat experimental wounds. J Clin Invest. 1993;92(5):2368–2376.
- Wasserstein RL, Lazar NA. The ASA Statement on p-Values: Context, Process, and Purpose. The American Statistician. 2016;70(2):129–133. doi:10.1080/00031305.2016.1154108.
- U.S. Food and Drug Administration. Step 3: Clinical Research.
- FDA. Surrogate Endpoint Resources for Drug and Biologic Development.