Scheme Information Sheets

UK NEQAS for Antibiotic Assays

Scheme Particulars Indicative Details
Accreditation body UKAS
ISO/IEC Accreditation status ISO/IEC 17043:2010
UKAS Accredited Proficiency Testing Provider No 7860
Objective of Scheme Provides EQA coverage and analytical assessment of a number of routine antibiotics.
Separate specimens are provided for each antibiotic, except Gentamicin and Vancomycin which share a tube
Pre-, Analytical, Post- status Analytical
Number of distributions per year (nominal) 11
Specimens per distribution 3 (Separate specimens for each analyte, except Gentamicin and Vancomycin)
Number of Specimens per annum 33
Frequency of distribution Monthly
Scoring system ABC
Material distributed Pooled, liquid human serum with or without exogenous added analyte
Programme Director(s) / Organiser(s) Rachel Marrington
Criteria for participation All, but overseas by courier
Nominal sample volume (mL) 1
Sample presentation TACs The antibiotic assays analytes are in separate tubes, except Gentamicin and Vancomycin which share a tube
Data in Chemistry on-line Dashboard Yes
Analyte Approx Range Default Units Target Value B Score Limit (%) C Score Limit (%)
Amikacin 0 – 50 mg/L ALTM 10.0 10.0
Gentamicin 0 – 12 mg/L MLTM 10.0 15.0
Teicoplanin 0 – 100 mg/L ALTM 10.0 10.0
Tobramycin 0 – 10 mg/L ALTM 15.0 15.0
Vancomycin 0 – 50 mg/L MLTM 10.0 15.0
Abbreviation Expansion
ALTM All Laboratory Trimmed Mean
GLTM Group Laboratory Trimmed Mean – which is the Method Principle Mean
MLTM Method Laboratory Trimmed Mean – usually a manufacturer system / analyser mean
XALTM An external value that may be from a Reference Method System
OGLTM A Method Principle Mean used as the target for all laboratories
OMLTM A specific Method Mean used as a target for all laboratories
MED Median

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