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CLSI Press Releases

CLSI is your source for laboratory standards news and information.

Find important updates, industry news, and information on CLSI’s upcoming events. Check out past CLSI press releases, upcoming Committees Week, and newsworthy items.

 CLSI Publishes New Chemistry Document C34—Sweat Testing: Specimen Collection and Quantitative Chloride Analysis

February 13, 2019

The Clinical and Laboratory Standards Institute has published C34—Sweat Testing: Specimen Collection and Quantitative Chloride Analysis. C34 describes methods for performing sweat testing for cystic fibrosis diagnosis. Sweat stimulation, collection, and quantitative measurement of sweat chloride are described, along with results evaluation and reporting, quality assurance, and method validation.

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CLSI Publishes New Antifungal Guideline

December 21, 2018

The Clinical and Laboratory Standards Institute announces the publication of CLSI guideline M44—Method for Antifungal Disk Diffusion Susceptibility Testing of Yeasts. M44 provides an approved method for determining zone diameter breakpoints for select Candida spp. with antifungal agents after 24 hours incubation, as well as quality control parameters for the same agents.

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CLSI Publishes New Microbiology Standard and Supplement

December 4, 2018

Wayne, Pennsylvania, Clinical and Laboratory Standards Institute has published M24--Susceptibility Testing of Mycobacteria, Nocardia spp., and Other Aerobic Actinomycetes, 3rd Edition and M62--Performance Standards for Susceptibility Testing of Mycobacteria, Nocardia spp., and Other Aerobic Actinomycetes, 1st Edition.

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CLSI Publishes New Chemistry Document C49—Analysis of Body Fluids in Clinical Chemistry

November 16, 2018

The Clinical and Laboratory Standards Institute has published C49—Analysis of Body Fluids in Clinical Chemistry. This guideline provides guidance to medical laboratories for the appropriate application of measurement procedures for body fluid testing and for reporting results. This guideline primarily focuses on the recommended practice for verification of measurement procedures for measurands in body fluids and is applicable for laboratory testing requests on body fluids that do not have performance claims in the manufacturer’s package insert or an equivalent validated laboratory-developed test.

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CLSI Publishes New Antimicrobial Susceptibility Testing Document

October 24, 2018

The Clinical and Laboratory Standards Institute announces the publication of M11--Methods for Antimicrobial Susceptibility Testing of Anaerobic Bacteria. M11 describes the reference standard agar dilution method (Wadsworth) and the alternative broth microdilution method.

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CLSI Publishes New Microbiology Guideline, M48

September 25, 2018

Clinical and Laboratory Standards Institute has published M48—Laboratory Detection and Identification of Mycobacteria. This guideline covers topics related to laboratory diagnosis of mycobacterial infections.

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CLSI Publishes EP34—Establishing and Verifying an Extended Measuring Interval Through Specimen Dilution and Spiking

August 16, 2018

CLSI announces the publication of EP34—Establishing and Verifying an Extended Measuring Interval Through Specimen Dilution and Spiking, 1st ed. EP34 provides recommendations for establishing a dilution scheme to be used for patient specimens that contain measurand concentrations in the extended measuring interval above a measurement procedure’s upper limit of quantitation.

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CLSI Publishes QMS22—Management of Paper-based and Electronic Laboratory Information

July 25, 2018

The Clinical and Laboratory Standards Institute announces the upcoming publication of QMS22—Management of Paper-based and Electronic Laboratory Information.This guideline is intended to help laboratories meet quality management system requirements for quality system essential (QSE) Information Management. In addition to discussing the requirements for how data and information are generated and entered into paper-based or electronic recordkeeping systems, this guideline also offers suggestions and examples for meeting the intent of the requirements.

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CLSI Publishes New Molecular Methods Document on Interpretive Criteria for Identification of Bacteria and Fungi

July 17, 2018

The Clinical and Laboratory Standards Institute announces the publication of MM18—Interpretive Criteria for Identification of Bacteria and Fungi by Targeted DNA Sequencing. MM18 includes information on sequencing DNA targets of cultured isolates, provides a quantitative metric for perceiving microbial diversity, and can serve as the basis to identify microorganisms. By establishing interpretive criteria for microorganism identification by targeted DNA sequencing, this guideline provides structure to laboratories that identify microorganisms for medical use.

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