What Is Turnitin iThenticate? The Researcher's Plagiarism Checker Explained

You have probably heard of Turnitin — the plagiarism detection tool your university uses to check student submissions. But Turnitin also makes a separate, more powerful product designed specifically for researchers, academics, and publishers: iThenticate. The two tools share the same underlying database but serve very different purposes and audiences. Here is exactly what iThenticate is, how it differs from student Turnitin, and who actually uses it.

What is iThenticate?

iThenticate is Turnitin's professional-grade plagiarism detection platform, built for academic researchers, journal editors, publishers, and institutions that need to check manuscripts, theses, dissertations, and research papers before publication. It was originally a separate company — CrossCheck — before Turnitin acquired and rebranded it.

Where student Turnitin is integrated directly into learning management systems like Blackboard, Moodle, and Canvas, iThenticate is a standalone platform accessed via a direct login. Users upload documents manually and receive a comprehensive Similarity Report, the same format instructors see when reviewing student work — but with access to a broader set of sources relevant to research and publishing.

iThenticate vs. Turnitin — what is the difference?

The core detection technology is the same. Both tools check submitted text against Turnitin's database and return a similarity percentage with a source-by-source breakdown. The differences are in who uses them, how they are accessed, and what sources they emphasise:

Audience. Student Turnitin is licensed to universities and accessed through assignment portals. iThenticate is licensed directly to researchers, graduate students, journals, and publishers — anyone who needs to check a manuscript independently.
Database focus. Both tools check the same core database of web pages, journals, and student papers. iThenticate additionally emphasises access to CrossRef — a database of published academic DOIs — making it particularly well-suited for checking research manuscripts against the published literature.
Submission volume and workflow. iThenticate is designed for individual document checks rather than batch class submissions. Researchers upload one manuscript at a time and receive a detailed report without an instructor intermediary.
Repository behaviour. By default, documents submitted through iThenticate are not added to the student paper repository that Turnitin uses for class submissions. This matters for researchers checking unpublished work — the manuscript does not become a match source for future submissions before it is published.
Pricing. iThenticate is priced per document or via institutional subscription, separate from any university Turnitin licence a student might have access to through their institution.

Who uses iThenticate?

iThenticate is used across the research and publishing ecosystem:

Academic journals and publishers use it to screen submitted manuscripts for plagiarism before peer review. Many major publishers — including Elsevier, Wiley, and Springer — run iThenticate checks as a standard part of their submission process.
Universities use it to check doctoral theses and dissertations before they are submitted to institutional repositories or published. Many graduate programmes require an iThenticate report as part of the thesis submission package.
Individual researchers use it to self-check manuscripts before submitting to journals — particularly to catch unintentional overlap with their own prior publications (self-plagiarism) or with literature they have cited heavily.
Research integrity officers use it when investigating allegations of research misconduct, including duplicate publication and data fabrication cases involving textual overlap.

iThenticate and self-plagiarism in research

One of the most common reasons researchers run iThenticate is to check for unintentional self-plagiarism — reusing text from their own previous publications without proper attribution or disclosure. In academic publishing this is a serious concern: journals expect submitted manuscripts to be original work, not recycled from the authors' prior papers. iThenticate checks submitted manuscripts against the published literature and can identify where an author's own previous work overlaps with the new submission.

This is distinct from the self-plagiarism concern in student work, where the issue is submitting the same essay to two courses. In research, the concern is methodological and ethical — repackaging the same findings across multiple publications, known as “salami slicing,” is considered a form of research misconduct at most institutions and publishers. Our guide on whether Turnitin can detect self-plagiarism covers the student context, but the underlying detection mechanism is the same.

Do students need iThenticate?

For most undergraduate and postgraduate coursework, no. Your university's Turnitin integration handles assignment checking through your learning management system. iThenticate becomes relevant for students in specific situations:

Doctoral students submitting a thesis or dissertation where the graduate school requires an iThenticate report
Students publishing research in academic journals, where the journal runs an iThenticate check on their manuscript
Students who want to check their dissertation independently before submission and whose university does not provide iThenticate access

For standard coursework — essays, reports, research papers — the relevant tool is the same Turnitin your instructor uses. Knowing what your Turnitin similarity score will look like before your deadline is what matters most at that stage. You can without waiting for your institution's submission portal to open.

Frequently asked questions

Is iThenticate the same as Turnitin?

They are made by the same company and use the same core detection technology and database. The difference is the audience and access model — Turnitin is integrated into university learning management systems for student submissions, while iThenticate is a standalone platform used by researchers, journals, and publishers to check manuscripts and dissertations.

Can students access iThenticate?

Some universities provide iThenticate access to doctoral students for thesis checking. Outside of that, iThenticate is not available through standard student Turnitin accounts — it is a separate subscription. Students who want to check their own papers before submission can use a service that provides real Turnitin reports rather than iThenticate, since their institution will be checking through Turnitin in any case.

Does iThenticate store my document in the student paper database?

No. Documents submitted through iThenticate are not added to Turnitin's student paper repository by default. This means checking an unpublished manuscript through iThenticate will not cause it to appear as a match source when a student later submits related work through their university's Turnitin integration.

Do academic journals use iThenticate?

Yes. Many major academic publishers use iThenticate as a standard part of their manuscript screening process before peer review. If you are submitting research to an academic journal, there is a strong likelihood the journal will run an iThenticate check on your manuscript before it reaches reviewers.