Diagnostics is an international, peer-reviewed, open access journal on medical diagnosis published monthly online by MDPI. Open Access— free for readers, with article processing charges (APC) paid by authors or their institutions. High Visibility: indexed within Scopus, SCIE (Web of Science), PubMed, PMC, Embase, Inspec, CAPlus / SciFinder, and many other databases. Journal Rank: JCR - Q2 (Medicine, General & Internal) Rapid Publication: manuscripts are peer-reviewed and a first decision provided to authors approximately 19 days after submission; acceptance to publication is undertaken in 2.8 days (median values for papers published in this journal in the second half of 2021). Recognition of Reviewers: reviewers who provide timely, thorough peer-review reports receive vouchers entitling them to a discount on the APC of their next publication in any MDPI journal, in appreciation of the work done.