Primary source: ClinicalTrials.gov Protocol Registration Quality Control Review Criteria.
For a data element question, use the linked ClinicalTrials.gov Data Element Definitions. Results information follows a different review path, described in the Results Quality Control Review Criteria.
Name the record owner and review set
Begin by identifying who can answer questions about the study, who can make record changes, and which current documents support the review. A protocol record can draw on a protocol, recruitment materials, contact information, sponsor decisions, and study-status updates. If those sources are not aligned before the review begins, the record tends to accumulate small contradictions.
Use one review copy of the record and one clear time point for the supporting materials. This gives collaborators a shared basis for resolving comments and prevents a late edit from being mistaken for a reviewed answer.
Check coherence before completeness
Read the record from the perspective of someone who has never seen the study. The study identity, purpose, design, population, locations, contacts, and status should describe the same study in plain, consistent terms. Where a statement is revised, follow its consequences across related entries instead of treating the edit as isolated.
Pay close attention to dates and status. Ask whether the record distinguishes what has happened from what is planned, and whether the current recruitment and completion information is supported by the study team. If the answer needs interpretation, bring it back to the responsible study contact instead of guessing from an older document.
Write for the public record
- Use a precise study title and summary. Give readers enough context to identify the study without turning the record into a copied internal document.
- Keep descriptions internally consistent. Match key wording across the public title, brief summary, detailed description, and intervention or outcome information where it appears.
- Use current contact and location information. Confirm which details are public-facing and which study team member owns future updates.
- Resolve placeholders and tentative language. A note that makes sense to the author can be unclear to a participant, reviewer, or collaborator reading the record later.
- Use the official definitions when a field is uncertain. ClinicalTrials.gov links record managers to its Data Element Definitions. Do not substitute a local convention for a definition that governs the record.
Make quality control a handoff, not a scramble
Reserve a short, focused review after content owners finish their edits. Give the reviewer the record, the source documents, and a way to send questions back to the right owner. Keep a concise decision note for any choice that depends on study facts or a current policy interpretation.
Quality-control feedback is part of the submission process, not evidence that the underlying study is complete or approved. If a required answer is not ready, resolve it with the responsible party before moving the record forward. For results reporting, start a separate review using the official results criteria rather than assuming the protocol review covers it.
What this guide does not decide
This guide does not determine registration obligations, study conduct, legal duties, research ethics, or whether ClinicalTrials.gov will accept a record. The official review criteria, data element definitions, and ClinicalTrials.gov processes remain authoritative.