ASB opens the second edition of Standard 036 for comment
Date: January 30, 2026 The AAFS Standards Board put the second edition of ANSI/ASB Standard 036, Standard for Test Method Selection, Development, Validation, and Verification in Forensic Toxicology, out for public comment, with the deadline extended to February 2, 2026. The companion guideline ASB G 236, Guideline for Conducting Test Method Development, Validation, and Verification […]
TNI publishes draft revision of the chemistry module (EL-V1M4-2025)
TNI’s Chemistry Expert Committee released Revision 3.0 of Volume 1 Module 4 as a draft standard, restating initial calibration requirements such as the minimum number of standards per model and relative-error-based acceptance. It is not yet adopted by NELAP accreditation bodies.
DoD requires labs to use EPA Method 1633’s analytical sequence definition
A DoD EDQW memorandum directed DoD ELAP laboratories running EPA Method 1633 to follow the method’s own definition of an analytical sequence rather than the QSM definition, effective immediately. The memo sets out a step-by-step sequence that governs how calibration and QC samples are run for PFAS analysis.
EPA keeps PFOA and PFOS drinking water limits but signals a later compliance date
EPA said it would retain the 4.0 ppt maximum contaminant levels for PFOA and PFOS while planning to move compliance from 2029 to 2031. It also announced plans to rescind the limits for four other PFAS, which affects which analytes drinking water labs must report.
EPA proposes Clean Water Act Methods Update Rule 22 with PFAS methods
EPA published a proposal to add Method 1633A for 40 PFAS, Method 1621 for adsorbable organic fluorine, and Method 1628 for PCB congeners to 40 CFR Part 136, and to withdraw several Aroclor methods. The comment period closed March 24, 2025, and the rule was still listed as proposed in October 2026.
FDA requires LAAF-accredited laboratories for mycotoxin testing of covered imported foods
Date: May 31, 2024 FDA determined under the Laboratory Accreditation for Analyses of Foods program (21 CFR Part 1, Subpart R) that there is sufficient laboratory capacity for mycotoxin analyses of covered imported foods. From December 1, 2024, owners and consignees of that food must use a LAAF-accredited laboratory for mycotoxin testing. FDA said that […]
FDA issues ICH Q2(R2) and Q14 as final guidance on analytical procedures
Date: March 2024 FDA’s Center for Drug Evaluation and Research issued ICH Q2(R2), Validation of Analytical Procedures, and the companion ICH Q14, Analytical Procedure Development, as final guidance in March 2024. Q2(R2) replaces the 2005 text with a broader framework that covers the reportable range, calibration model selection, and the validation of spectroscopic and multivariate […]