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.

CLSI Announces the Recipients of the 2019 CLSI Excellence Awards

January 15, 2019

The Clinical and Laboratory Standards Institute announces the recipients of its 2019 Excellence Awards. These awards celebrate the achievements of CLSI volunteers who have helped improve the quality of medical care worldwide.

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.

CLSI Publishes New Quickguide to Accompany POCT01--Point-of-Care Connectivity, 2nd Edition

December 14, 2018

The Clinical and Laboratory Standards Institute announces the publication of a new Quickguide to Accompany POCT01--Point-of-Care Connectivity, 2nd Edition. This quickguide summarizes the information in POCT1-A2, Point-of-Care Connectivity; Approved Standard—Second Edition.

CLSI to Publish 29th Edition of Annually Updated AST Supplement M100

December 13, 2018

The Clinical and Laboratory Standards Institute announces the publication of its annually updated antimicrobial susceptibility testing (AST) supplement M100—Performance Standards for Antimicrobial Susceptibility Testing, 29th ed. M100 is available as part of a package with either M02—Performance Standards for Antimicrobial Disk Susceptibility, 13th ed. or M07— Methods for Dilution Antimicrobial Susceptibility Tests for Bacteria That Grow Aerobically, 11th ed, or all three documents together.

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.

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.

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.

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.

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.