Fan Qishi: publicly available information is limited. At present, the only known work by this author is one medical title, Immunoassay. Judging from the title and its classification, the book likely addresses the principles, methods, and applications of immunoassay, a practical subject at the intersection of laboratory medicine and clinical immunology. Works of this kind generally serve medical laboratory professionals, clinicians, and students and teachers in related fields, and tend to emphasize clear concepts, well-defined operational points, and a connection between theoretical background and practical application. Because reliable records of the author's biography, nationality, education, and positions are unavailable, this introduction makes no speculation and offers only an objective account of the work information confirmed in the database. As a specialized, practice-oriented medical book, Immunoassay can, to some extent, provide readers with an introduction to and reference on immunoassay techniques, while its specific contents and academic influence await further examination alongside the original text.
