Tables of Essential Clinical Laboratory Statistics

Welcome to the 2005 Edition of Essential Clinical Laboratory Statistics presented by David G. Rhoads Associates, Inc. (Rhoads). Two sets of tables are currently available:

Age-based Reference Intervals

Charts and Tables by Sex and Age, estimated by Rhoads Associates from NHANES III (a national survey of 34,000 subjects conducted during 1988-94).

Allowable Total Error

The Allowable Total Error Table is drawn from eight sources: CLIA '88, College of American Pathologists (CAP), Wisconsin State Laboratory of Hygiene, Wadsworth Center of the New York State Department of Health, American Association of Bioanalysts (AAB), the Royal College of Pathologists of Australasia and the Australasian Clincal Biochemist association Quality Assurance Program, Canadian Fixed limits from the College of Physicians and Surgeons of Saskatchewan, and the 2004 update of the Spanish Society of Clinical Chemistry and Molecular Pathology (SEQC) table of Desirable Quality Specifications based on Biological Variation.

We also have separate, abbreviated, tables for just the CLIA '88 Limits, and just the Biological Variation Limits

Published Reference Intervals

The Reference Interval Table lists reference intervals for adult and pediatric humans and several species of animals. Sources:

Laboratory Reference Range Values, Children's Medical Center of Dallas (2000)
Oklahoma State University Animal Reference Range Values (1996)
Kratz A, Lewandrowski KB. Case records of the Massachusetts General Hospital. Weekly clinicopathological exercises. Normal reference laboratory values. NEJM 1998; 339:1068-72.

Disclaimer

Although Rhoads is making its best efforts to ensure that the published values accurately represent the original data from which they were obtained, Rhoads cannot guarantee that the numbers are accurate, or in fact, even meaningful. Use them at your own risk!

We have tried to place the most important or reliable data near the top of the list. Broad groups of data will have similar importance. In most cases, user-contributed data will appear at the end of the list. The position of an item in the list does not guarantee that it will be accurate or even useful to you. That decision is left to your own professional opinion.

By accessing these tables either directly or indirectly, you agree to hold harmless to any liability either direct or indirect, all those contributing to this work. Those contributing to this work include, but are not limited to: David G. Rhoads Associates, Inc. (Rhoads), Rhoads' employees and contractors, editors of this database, and those contributing data to this database.