Scheme Information Sheets

UK NEQAS for Faecal Markers

Scheme Particulars Indicative Details
Accreditation body UKAS
ISO/IEC Accreditation status ISO/IEC 17043:2023
UKAS Accredited Proficiency Testing Provider No 7860
Objective of Scheme Provides EQA coverage for analytes that Laboratories ues to assess IBD and IBS in patients with gut problems and flare ups
Pre-, Analytical, Post- status Pre/Analytical/Post
Number of distributions per year (nominal) 11
Specimens per distribution 3
Number of Specimens per annum 33
Frequency of distribution Monthly
Scoring system ABC
Material distributed Human faeces
Programme Director(s) / Organiser(s) Finlay MacKenzie
Criteria for participation All, but overseas by courier
Nominal sample volume (mL) pea-sized amount (minimum)
Sample presentation TACs Stool sample in a single tube
Data in Chemistry on-line Dashboard Yes

Please contact us for more details of S100-A12 if you require this analyte...

Analyte Approx Range Default Units Target Value B Score Limit (%) C Score Limit (%)
Calprotectin 0 – 2400 µg/g ALTM 60.0 60.0
Calprotectin interp ~ N, E or P ~ ~ ~
Lactoferrin (quantitative) 0 – 1000 µg/g ALTM 60.0 60.0
Lactoferrin interpretation ~ N or P ~ ~ ~
POCT Calprotectin 0 – 2400 µg/g ~ ~ ~
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
OMMED A Method Median used as the target for all laboratories
MED Median

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