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Procedures for Validation of INR and Local Calibration of PT/INR Systems, 1st Edition

This document describes the use of certified plasmas to enhance performance of the prothrombin time (PT)/International Normalized Ratio (INR) system test; reviews limitations of the INR systems that may occur when a manufacturer-determined ISI is used without local verification or calibration; and provides a rationale for performing local ISI verification with recommendations as to when PT calibration may be indicated. Part I is a detailed, expanded account for manufacturers and Part II is an abbreviated version useful for the clinical laboratory.

This document is available in electronic format only.

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Chairholder: Dorothy M. Adcock, MD

Date of Publication: August 19, 2005

Order Code PDF: CLSI H54AE
ISBN Number: 1-56238-580-1

Order Code Print: print not available

Edition: First

Pages: 64

CLSI H54 Additional Details

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This archived document is no longer being reviewed through the CLSI Consensus Document Development Process. However, this document is technically valid as of August 2020. Because of its value to the laboratory community, it is being retained in CLSI’s library.