Laboratory procedures used for the third National Health and Nutrition Examination Survey (NHANES III), 1988-1994

This manual was designed to document the full scope of the laboratory component of the third National Health and Nutrition Examination Survey (NHANES III), which was conducted by the Division of Health Examination Statistics (DHES), National Center for Health Statistics (NCHS), Centers for Disease Control and Prevention (CDC), from 1988 to 1994. It is a complete, working laboratory manual for nutritional biochemistry, immunology, hematology, and toxicology analyses as they were performed for this multi year national survey. NHANES III, which gathered data on 30,000 survey participants (or "SPs") in 89 different geographic locations across the United States, was divided into two phases, each of which provided nationally representative subset distributions of the U.S. population: Phase I (1988-1991) and Phase II (1992-1994). A complete description of the survey, including all questionnaires used and descriptions of all survey procedures may be found in the Plan and Operation of the Third National Health and Nutrition Examination Survey 1988-1994 (National Center for Health Statistics. Vital Health Stat 1(32).1994.