10 free verifications — no card required

Reference checking that takes minutes, not days

Built for medical writers who need to verify clinical claims fast. RefCheckr checks the evidence, flags overclaims, and assesses ABPI compliance — so you can ensure claims are both evidence-backed and compliance-ready.

Try RefCheckr → How it works

Example verification

"Semaglutide 2.4 mg significantly reduced cardiovascular events in adults with obesity."

◐ Overclaim

…A 20% reduction in MACE was observed in the semaglutide group; however, the trial was not powered to assess cardiovascular outcomes as a primary endpoint…

Suggested: "…was associated with a reduction in cardiovascular events, though the trial was not powered for this endpoint."

See RefCheckr in action

Watch a claim get verified in seconds, then see the annotated PDF it produces.

Live demo

RefCheckr demo showing a claim being verified against a reference PDF

Annotated PDF export

How it works

Three tools, one workflow

Verify evidence, check compliance, and find references — all in one place. RefCheckr fits into your existing reference-checking process.

Verify a Claim

Check whether a specific claim is accurately supported by its cited reference.

Paste a single claim, a paragraph, or an entire manuscript section
Upload PDFs or select from your reference library (up to 20 for Pro)
Citation markers are detected and mapped to your references
Get a colour-coded verdict with highlighted passages and page locations
Analyse tables & figures with AI vision (Pro)
Download annotated PDFs or listen to an audio brief

Check Compliance

Assess whether a claim meets the ABPI Code of Practice — with real clause references.

After verification, click "Check ABPI compliance"
Get a risk rating: low risk, review recommended, or high risk
See the relevant ABPI clauses retrieved from the code of practice
Get a suggested rewrite for non-compliant claims
Ask follow-up questions in the built-in compliance chat

Find References

Search multiple databases for evidence that supports a clinical claim.

Enter the claim you need references for
Choose your sources — PubMed, trials, labelling
Get results ranked by relevance with explanations
Load more results with broadened search terms

Data sources

Search across four databases

RefCheckr queries established biomedical infrastructure directly — shows the exact passage and page location so you can verify in seconds.

article

PubMed

36 million citations from biomedical literature. Results ranked by relevance to your claim with AI-generated assessments.

science

ClinicalTrials.gov

Trial registrations with status, phase, enrollment, and sponsor data. Find the trial behind the paper.

medication

US Drug Labelling

US Prescribing Information via DailyMed and OpenFDA. Check approved indications, dosing, and safety data.

local_pharmacy

UK SmPC

UK Summary of Product Characteristics via the electronic Medicines Compendium (eMC). Check licensed indications and dosing.

Verdicts

Five levels of evidence support

Every verification returns a clear verdict with the exact passage, page location, and a plain-language explanation.

What we check: claim wording, endpoints, population, effect size and units, and whether the reference actually supports the level of certainty.

↑ Tap a verdict to learn more

Under the hood

Built on real infrastructure

Not a wrapper around a chatbot. RefCheckr combines structured AI analysis with direct database access.

Analysis LLM-assisted claim verification and overclaim detection

Literature PubMed / NCBI via PubCrawl

Trials ClinicalTrials.gov API

Labelling DailyMed + OpenFDA + eMC (UK SmPCs)

PDF Page, column & line-level extraction

Output Annotated PDF with verdict summary

Your data

Privacy by design

delete

You choose what's stored Ad-hoc uploads are processed in memory and discarded. Library references are stored securely so you can reuse them.

visibility_off

Delete anytime Remove any library reference instantly. Ad-hoc text is never persisted.

lock

Private by default Your claims and results are never shared, indexed, or used for training.

manage_accounts

You control your data Delete your account and all associated data at any time.

Learn how RefCheckr handles data →

lock HTTPS Encrypted delete You Control Your Data block Not Used for Training

"In a nutshell, it works!"

Dr Swen Langer

Freelance Medical Writer — Langer Medical Writing

"I would be happy to say that a document I had written had been written with the aid of RefCheckr."

Kelly Drake, PhD

Medical Writer, EMWA Member — Kelly Drake Medical Writing

"Referencing claims is the part of my work that I like the least — I would certainly use this."

Racquel Cooper, PhD

Medical Communications & Medical Affairs Consultant

One tool for reference checking and compliance

Verify evidence, check ABPI compliance, and export annotated PDFs — all in seconds.

Monthly

Pro

£29 / month

Billed monthly. Cancel anytime.

Unlimited claim verifications
Upload up to 10 PDFs per verification
Reference library — upload once, verify many
PubMed, ClinicalTrials.gov, PI & SmPC search
Annotated PDF exports with verdict summaries
Audio briefs for every verification

Get started →

Pro

£9 / month

Billed annually at £108.

Unlimited claim verifications
Upload up to 10 PDFs per verification
Reference library — upload once, verify many
PubMed, ClinicalTrials.gov, PI & SmPC search
Annotated PDF exports with verdict summaries
Audio briefs for every verification