Preprint
A scientific manuscript shared publicly before formal peer review, typically on servers such as bioRxiv or medRxiv. Preprints provide rapid access to new findings but have not been independently validated. PeptideTrace publication counts are based on peer-reviewed PubMed literature, not preprints.
Technical Context
Major preprint servers: bioRxiv (biology, operated by Cold Spring Harbor Laboratory), medRxiv (clinical/health sciences, operated by BMJ/Yale/CSHL), arXiv (physics/mathematics/computer science), and ChemRxiv (chemistry). Preprints typically receive a DOI and are permanently archived. They may undergo basic screening (not formal peer review) — bioRxiv screens for: scientific merit (not blank/spam), appropriate subject area, and no patient data/clinical trial results that bypass regulatory oversight. Preprint advantages: rapid dissemination (days vs months for peer review), priority establishment, and community feedback. Limitations: no independent quality validation, potential for errors to be widely cited before correction, and risk of media sensationalisation of unvalidated findings. Some journals screen preprints for articles to invite (accelerating the publication of significant work).