CLSI H44
Methods for Reticulocyte Counting (Automated Blood Cell Counters, Flow Cytometry, and Supravital Dyes)
This document provides comprehensive protocols for reticulocyte counting using flow cytometry and automated hematology instruments. It includes detailed procedures for calibration, quality control, precision assessment, and the reference new methylene blue (NMB) method to ensure accurate and reliable results.
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{{FormatPrice(nonMemberPrice)}} List PriceClinical and Laboratory Standards Institute document H44-A2—Methods for Reticulocyte Counting (Automated Blood Cell Counters, Flow Cytometry, and Supravital Dyes); Approved Guideline—Second Edition provides guidance for the performance of reticulocyte counting by flow cytometry and automated hematology instruments. This guideline addresses methods for determining the precision and trueness of the flow cytometer and blood cell counters based upon principles of focused flow dynamics, along with recommendations for calibration and quality control. A description of the new methylene blue (NMB) method, a method against which the test instrument can be compared, is also included. Additional topics discussed include reference intervals and use of related reticulocyte parameters, i.e., the immature reticulocyte fraction (formerly termed “reticulocyte maturation index”) and reticulocyte hemoglobin content (CHr).
This archived document is no longer being reviewed through the CLSI Consensus Document Development Process. However, this document is technically valid and because of its value to the laboratory community, it is being retained in CLSI’s library.
This document is available in electronic format only.
Clinical and Laboratory Standards Institute document H44-A2—Methods for Reticulocyte Counting (Automated Blood Cell Counters, Flow Cytometry, and Supravital Dyes); Approved Guideline—Second Edition provides guidance for the performance of reticulocyte counting by flow cytometry and automated hematology instruments. This guideline addresses methods for determining the precision and trueness of the flow cytometer and blood cell counters based upon principles of focused flow dynamics, along with recommendations for calibration and quality control. A description of the new methylene blue (NMB) method, a method against which the test instrument can be compared, is also included. Additional topics discussed include reference intervals and use of related reticulocyte parameters, i.e., the immature reticulocyte fraction (formerly termed “reticulocyte maturation index”) and reticulocyte hemoglobin content (CHr).
This archived document is no longer being reviewed through the CLSI Consensus Document Development Process. However, this document is technically valid and because of its value to the laboratory community, it is being retained in CLSI’s library.
This document is available in electronic format only.