The proposed reference book provides complete and up-to-date information on almost all medical analyzes: general clinical, biochemical, hormonal, immunological and many others. Particular attention is paid to the description of the causes of changes in normal indicators, the effect on these changes of diseases, drugs and even errors in the collection of analysis. The directory is distinguished by a logical and clear for use logical structure, a developed system of alphabetical indexes, and convenient data search. The book is recommended both for people without medical education and for doctors and other medical professionals.