This book is intended as a quick-reference book for endocrinologists, endocrine trainees and physicians dealing with common endocrine problems. It will be useful both in the wards and the busy out-patient clinics. The information contained in this booklet should be supplemented with clinical judgment and in-depth reading from a bigger textbook. Simple and user-friendly. Divided into eight chapters: Clinical Biochemistry: Reference Ranges; Evaluation of Endocrine Disorders; Endocrine Test Protocols; Treatment Protocols; Endocrine Emergencies; Diabetes Protocols; Common Calculations and Scoring Systems; and Drug Doses. New tabular format is added for testing protocols. Reference ranges mentioned in this booklet are taken from the Department of Clinical Biochemistry, Christian Medical College, Vellore, Tamil Nadu, India. Treatment protocols are for adult patients.