PLOS ONE Pre-Submission Checklist: Are You Ready to Submit?

1. Are the methods detailed enough for another lab to reproduce the work?

The official criteria require experiments, statistics, and other analyses to meet a high technical standard and be described in sufficient detail. Build the methods so a reader can identify the design, analysis, controls, materials, software, and boundary required to examine the central result.

Ask yourself: if someone in your field read only the methods section, could they reproduce the study? If the answer is "mostly, but they would need to email me about a few details," the methods are not ready.

2. Is the sampling and analysis rationale visible?

State the unit of analysis, sampling rationale, exclusions, statistical procedure, and any limitation that changes how a reader should interpret the result. The right evidence depends on the study; do not insert a generic power-analysis claim when it is not the study's actual justification.

3. Are the statistical claims bounded by the design?

Check that the outcome, comparison, uncertainty, and interpretation match the data and analysis actually reported. Do not convert an association into a causal claim or hide an analytical choice a reader needs to assess validity.

4. Is the data deposited in a public repository?

PLOS ONE requires that underlying data be publicly available. "Data available upon request" is not sufficient unless there is a specific, justified reason (human subjects restrictions, endangered species locations). The statement must include repository names, accession numbers, or DOIs.

Use the current PLOS guidance and a suitable field or general repository when public deposit is appropriate. If access is legitimately limited, document the reason and route rather than making an availability promise a reader cannot use.

5. Is the data availability statement specific?

A vague statement delays the process. "All data are available in the Supporting Information files" is acceptable only if the data are actually there. "Data are available from the corresponding author" without explaining why public deposit is not possible will be sent back for clarification.

6. Have you completed the correct reporting checklist?

PLOS ONE expects discipline-specific reporting guidelines to be followed:

Complete the checklist with specific page or section references, not generic pointers; PLOS asks for page numbers and relevant text on the STROBE-MR checklist. Check the EQUATOR Network if unsure which guideline applies.

7. Is the clinical trial registered (if applicable)?

PLOS ONE requires clinical trials to be registered in a WHO- or ICMJE-approved registry and supports prospective registration before participant recruitment begins; if a trial was not registered beforehand, authors must register it and explain the reason in the Methods. The registry name and number must appear in the abstract. PLOS reserves the right to reject a manuscript if it learns of an unregistered trial.

8. Do the conclusions stay within what the evidence supports?

PLOS ONE is especially sensitive to overclaiming. The journal does not evaluate significance, which means the editorial filter focuses even more on whether claims are proportional to the evidence. An observational study described with causal language will be flagged. A pilot study presented as definitive will be sent back.

Match the language to the design: "suggests" for associative findings, "is consistent with" for confirmatory results, "demonstrates" only when the design truly supports it.

9. Are ethics approvals explicitly stated?

Human subjects research needs IRB approval with the approving committee named in the methods. Animal research needs institutional animal care committee approval, with the committee's full name and permit number(s) in the methods. Clinical trials need both ethics approval and registration. PLOS takes research integrity seriously and incomplete ethics documentation can stop a paper before review.

10. Is the conflict of interest declaration complete?

All authors must declare conflicts. "No conflicts" requires each author to have confirmed this. PLOS says failure to declare competing interests can result in immediate rejection, and that it will act in line with COPE guidelines if an undisclosed competing interest comes to light after publication.

11. Is the manuscript in an accepted format?

PLOS ONE accepts DOC, DOCX, and RTF. LaTeX must be submitted as PDF. Figures must be separate files (not embedded), cited in ascending order, with captions in the manuscript text. Supporting information files must be smaller than 20 MB each (PLOS's supporting information page recommends under 10 MB). The abstract must not exceed 300 words and should not include citations.

12. Does the manuscript read like it was prepared for PLOS ONE?

A paper rejected from a selective journal and resubmitted to PLOS ONE without rewriting often looks structurally wrong. The introduction may oversell the significance. The discussion may overinterpret. The framing may assume reviewers will evaluate impact rather than soundness. If the manuscript was written for a different journal, rebuild it for PLOS ONE's editorial standard before submitting.

This checklist covers 12 items manually. The PLOS ONE submission readiness check evaluates your manuscript against PLOS ONE's standards automatically in about two to three minutes. You get a readiness score, desk-reject risk signal, top issues with direct quotes from your manuscript, and a journal-fit verdict.

If the scan surfaces concerns, the PLOS ONE submission readiness check provides a full six-section report with citation-integrity checks against scholarly metadata sources, figure-level feedback, and a prioritized revision checklist calibrated to PLOS ONE.

These are Manusights checks tied to the official criteria, not a published PLOS ONE frequency ranking:

• methods too vague to assess validity

• data availability statement missing or insufficient

• reporting checklist incomplete or absent

• conclusions overclaiming relative to the study design

• ethics documentation incomplete

• manuscript clearly reformatted from a rejected selective journal submission without rewriting

For more detail, see How to Avoid Desk Rejection at PLOS ONE and the PLOS ONE Submission Guide.

• PLOS ONE Submission Guide

• PLOS ONE Under Review: Status Meanings

• PLOS ONE Acceptance Rate

• PLOS ONE Review Time

• PLOS ONE vs Scientific Reports

Worth the investment if:

• You are targeting a journal with <20% acceptance and high desk rejection

• A rejection would cost 3-6 months in resubmission cycles

• The paper is career-critical (job market, tenure, grant renewal)

• You want an independent assessment of methodology and framing before submission

Skip it if:

• The paper is going to a familiar journal where you have a track record

• Three experienced colleagues have already reviewed the manuscript

• Your timeline is too tight to act on the feedback

• The study has fundamental design issues that need new experiments, not editing

The most common PLOS ONE failure is not technical noncompliance. It is a manuscript that was originally written for a selective journal and still argues like significance is the central editorial test. At PLOS ONE, the cleaner path is usually to narrow the claims, make the methods and data trail explicit, and let the paper win on soundness instead of trying to defend broad impact language that the journal is not asking for.

• Unreconstructable primary analysis: the methods, software, parameters, exclusions, and data route do not let a reader assess the primary result.
• Reporting-guideline mismatch: the listed checklist does not map each required item to the actual manuscript location.
• Ethics-record inconsistency: approvals, consent or waiver, registration, funding, and contributor information disagree across the record.
• Conclusion outruns design: causal, predictive, or general statements extend beyond the represented data and analysis.
• Availability promise is not operational: the stated repository, restriction, code route, or persistent identifier does not lead to usable evidence.

Review these failures before file formatting. PLOS ONE's criteria center scientific validity and ethical, transparent reporting; a polished upload does not repair an analysis that readers cannot assess.

This is a source-based routing aid, not an acceptance forecast.

A submission can satisfy every isolated checklist item and still fail because its files disagree. Perform one final audit by claim rather than by document.

Assign each discrepancy an owner and do not generate the final PDF until every material mismatch is resolved or transparently explained. This is stricter and more useful than checking file presence alone.