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Quality Assurance Unit - Scheme Details

PT Number
Scheme title
Worm egg 
Suitable testing methods
Worm Egg identification and count by McMaster or modification.
Reporting format

Worm egg - Counts of identified Nematodirus, Trichostrongyle and/or Oocyst eggs.

Authorised final reports are published electronically. Each report includes a collation of participants’ results (egg type identified and count), mean values of egg counts for each PT-sample calculated from participants’ results, comments and a link to a statistical analysis report.

The statistical analysis is supplementary. Z-scores are calculated from the participants’ results to identify questionable or outlier results by a robust statistical method. The mean value (consensus value) is used in determining these z-scores and as the Intended Result.

Results to be returned within
14 days
Number of samples in each distribution
Sample Type
Worm egg count 5 g treated ovine faeces from infected animals (unless otherwise specified).
Packaging and transport details
UN3373. Biological substance Category B. UK - Normal post, Overseas - courier. Courier delivery will incur additional costs. Please contact the QA unit for details
Number of distributions per year
Various aspects of the Proficiency testing schemes may at times be subcontracted. When this occurs it is placed with a competent subcontractor and the Quality Assurance Unit is responsible to the scheme participants for the subcontractors work.
Accreditation status
 ISO/IEC 17043: 2010 Conformity assessment – General requirements for proficiency testing.
Date scheme started
Pre 2007
This PT scheme is primarily for parasite identification. Due to the nature of the samples enumeration of the parasites is secondary. The counts displayed statistically on the second part of the report are for guidance only.
For price and detail of distribution months please see price list or contact:
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