Conditions of Participation

1. All laboratories working in the field of forensic or clinical toxicology or related fields may participate.

2. If not stated otherwise in the requests regarding the proficiency test no special methods for analysis are prescribed.

3. Registration for participation is possible up to the start of the EQA scheme, but for organizational reasons this should be done at least one week before the start. Later registrations within the period of the respective EQA scheme are only possible on request..

4. Enrolment may be by subscription or for an single test.

5. The results of the proficiency tests may be submitted by post, fax, e-mail or via our website.

6. The results must have been reported by the scheduled deadline. Extensions are possible in justified cases after agreement with the test organizer. If the results are received late, the participant will receive a results report without including their own results.

7. The evaluation corresponds to acknowledged scientific criteria which are supervised by accompanying working groups and/or expert groups.

8. Incorrect entries in the result forms can only be corrected until the reporting deadline of the respective EQA scheme. Subsequent corrections are only possible in justified cases with the approval of the GTFCh coordinators.

9. The participants receive their reports of results by post. In case of an incorrect analysis the participants in ques-tion are entitled to receive a corrected report. Further claims do not exist.

10. If a proficiency test cannot take place, already paid participation fees will be refunded.