Recently Approved Documents
Analysis and Presentation of Cumulative Antimicrobial Susceptibility Test Data; Approved Guideline—Second Edition (M39-A2)

M39-A2—Analysis and Presentation of Cumulative Antimicrobial Susceptibility Test Data; Approved Guideline—Second Edition 
This document provides guidelines for clinical laboratories and their data analysis software providers on the routine generation and storage of susceptibility data, and the compilation of susceptibility statistics.  M39-A2 provides recommendations for consistent and effective use of cumulative susceptibility statistics, to enable clinicians to select the most appropriate agents for empiric antimicrobial therapy.  Updates include expanded rationale behind including only the "first isolate per patient" in analyzing data; guidelines for data presentation; and expanded guidelines for presenting data to reflect new resistance trends.
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Second Notice

EP7-A2—Interference Testing in Clinical Chemistry; Approved Guideline—Second Edition
Promoting uniformity in evaluating interference characteristics in clinical laboratory measurement procedures, EP7 describes procedures for manufacturers to screen potentially interfering substances, quantify interference effects, and confirm interference in patient samples. The guideline also describes procedures for clinical laboratories to verify interference claims, and to investigate discrepant results caused by unsuspected interfering substances.  Includes background information on interference testing concepts, tables of recommended test concentrations for analytes and potential interference, and data collection and analysis worksheets.
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