Turnitin is available in several ”Zaken” (Cases) . These have an integrated link with the plagiarism checker:

Decentralized: The plagiarism checker is part of a faculty or program thesis/assessment case.
Centralized: Plagiarism check (standalone) ”Zaak”.

Ask within your program or faculty which Zaak is used and/or recommended.

PLEASE NOTE: documents are saved for three months in the Centralized case, the plagiarism report is available for 24 months.