How NeetVellum content is built

Two banks, never one blurred claim

Original practice questions are authored for NeetVellum and are not represented as recalled or previous-year examination items. A question receives a PYQ label only when its paper is traceable to an official host or archived official publication and the answer is checked against an authoritative final key.

Original-question gate

Each content batch is checked for schema, stable ID, subject and chapter validity, permitted sources, review date, four distinct options, answer bounds, explanation length, exact duplicates and near-duplicates against both the published bank and the new batch. PG clinical content is additionally screened for unstable or unsafe treatment, dose, screening and guideline-next-step claims.

PYQ provenance

Every published PYQ record stores the examination, year, paper code, question number, official paper URL, official final-key URL and verification date. Items dependent on unreadable diagrams, missing layout or conflicting official evidence are withheld rather than reconstructed from coaching copies or memory.

Student-evidence loop

Attempts produce aggregate accuracy, response-time and option-selection signals. The editorial queue calculates median response time and discrimination when enough signed-in attempt evidence exists. Repeated reports automatically quarantine a question from new sessions. Operators can resolve with an audit note, restore after review or keep the item retired without deleting historical attempts.

Reports and corrections

Every practice question includes report reasons for wrong key, ambiguity, unclear explanation, syllabus scope, outdated information, formatting and duplication. Report a defect in the question surface or through Support. A high attempt count does not make a question correct; poor discrimination or an implausible option distribution is evidence for human review.

How MBBS source-verification works

Every page in the MBBS library carries one of two badges, and the distinction is deliberate. Source-verified means the page has completed a claim-by-claim audit against its cited sources, with the review date shown. Verification in progress means that audit has not been done yet. At the time of writing, 91 of 332 topics are source-verified.

Both states share a floor that applies to the whole corpus. Every citation in every page — 8,110 references across 5,701 distinct PubMed records — has been fetched from PubMed and checked to confirm the record exists and matches the reference as printed. A citation that resolves to a different paper fails the build. In September 2026 that check found two such references, both corrected against the real records.

The same pass reviewed the numeric and pharmacological claims of all 332 topics — doses, units, routes, thresholds, sequences and contraindications, the claims that cause harm when wrong. It found and corrected seven critical errors. It did not re-derive every sentence of pathophysiology, and the badge does not claim that it did.

Where a claim is supported only partially by its cited source, that is recorded rather than hidden, and it is why the verified badge says the claims were audited rather than that every one was confirmed. Corrections are welcome through Support; a dated, sourced correction is acted on and the page's review date is reset.

Clinical and admission limits

Medical explanations are educational, not patient-care instructions. Admission, rank and counselling content is dated and non-predictive unless an official source explicitly supports the claim. NeetVellum does not manufacture topper quotations, chapter-weightage guarantees, future ranks or institutional endorsement.