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How to Read a Clinical Trial Record

Registration, recruitment, completion, posted results and journal publication are different milestones. Read them separately.

By Peptide Mag Editorial. Updated . Source and review policy.

Start with the study identifier

An NCT identifier points to a specific ClinicalTrials.gov record. Use that identifier to connect registry details with a publication rather than assuming that matching compound names mean matching trials.

Record the condition, intervention, comparator, planned outcomes, enrollment and dates. Check whether a field describes planned or actual information. These details give context for the question the investigators set out to answer.

Separate the milestones

The trial tracker displays a selected set of registry records and their source dates. It is not a live guarantee of current recruitment or a ranking of treatments.

Record informationWhat it meansWhat it does not prove
Registered studyA study record existsA beneficial result
Recruitment statusThe registry's recorded stageAvailability or suitability for a particular person
CompletedThe recorded study stage is completeThat a positive result was found
Posted resultsA results section is available in the registryAgreement with every promotional claim
Journal publicationA report has been publishedThat its findings apply beyond the studied setting

Read the registry and paper together

The selected tesamorelin record and its linked published trial show why both sources are useful. Registry metadata describes the study; the paper reports methods and outcomes in more detail.

A registry lacking a posted results section does not necessarily mean no paper was published. Likewise, an abstract online does not automatically identify the final prespecified analysis. Follow the identifiers and source dates.

Check the history, not only the headline

Statuses and records can change. When sharing an interpretation, retain the date checked and distinguish it from the study's own last-update date. A dated source check is more honest than silently presenting an old status as permanently current.

A trial registry is not a medical approval database. The regulatory reference explains why product approval must be checked separately.

Sources and further reading

  1. ClinicalTrials.gov — public data API and study records
  2. Tesamorelin registry example