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CLSI Publishes Guideline for the Collection, Transport, and Processing of Blood Specimens for Coagulation Assays.

WAYNE, Pa. -- The reliability and accuracy of coagulation test results depend upon a variety of variables, including anticoagulant volume and concentration, type of tube additive, duration and temperature of specimen storage, and surface of containers used for specimen collection and storage.

Because of the many variables that can affect coagulation test results, Clinical and Laboratory Standards Institute (CLSI, formerly NCCLS) recently published an updated guideline, Collection, Transport, and Processing of Blood Specimens for Testing Plasma-Based Coagulation Assays and Molecular Hemostasis Assays; Approved Guideline--Fifth Edition (H21-A5), which provides procedures for collecting, transporting, and storing blood; processing blood specimens; storing plasma for coagulation testing; and general recommendations for performing the tests.

This document replaces the fourth edition approved guideline, H21-A4, which was published in 2003. Changes in this edition of the document include:

* revised transportation and storage guidelines for plasma-based hemostasis testing; and

* addition of information pertinent to the collection, transportation, and processing of specimens for molecular hemostasis assays.

The intended users of this guideline are laboratory and/or clinical personnel responsible for obtaining patient specimens and preparing samples for plasma-based or molecular coagulation testing. It is also aimed at manufacturers of products involved in specimen collection, storage, preparation, and testing of plasma-based or molecular hemostasis assays.

For additional information on CLSI or for further information regarding this release, visit our website at or call +610.688.0100.

CLSI, formerly NCCLS, is a global, nonprofit, membership-based organization dedicated to developing standards and guidelines for the health care and medical testing community. CLSI's unique consensus process facilitates the creation of standards and guidelines that are reliable, practical, and achievable for an effective quality system.
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Publication:Business Wire
Date:Feb 11, 2008
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