Guides
Proficiency testing, explained
Proficiency testing (PT) is how a laboratory shows, with evidence from outside, that its results agree with an independent value. A PT provider sends the same test items to many laboratories, scores each result against criteria fixed before the round, and reports back. These guides explain how that works, for the people who run PT schemes and for the laboratories that take part.
Proficiency testing basics
What PT is, how a round runs, and what the standards ask of laboratories and providers.
Statistics for PT
How assigned values, robust statistics and scores are worked out, with worked examples.
Learn it properly, for free
The EqasOnline Academy course covers the same ground in six modules, from what PT is to investigating a poor score, with a short check after each lesson. It is free; lessons open after you create a free account. Looking for a scheme instead? Search the PT directory.
Browse the course