Turnitin does not flag essays that include plagiarized ideas or concepts, nor can it detect paraphrasing that dramatically changes the wording of an original source while maintaining that source's organization.

Can Turnitin check paraphrase?

Can Turnitin detect paraphrasing? If well done, Turnitin cannot detect paraphrasing because the new paraphrased is not similar to the original source word-to-word. However, if poorly paraphrased, Turnitin will definitely scan and flag the text as plagiarism. ... Turnitin can detect paraphrasing.

Can Turnitin detect everything?

Since Turnitin compares the overlapping texts of the submitted papers with stored old papers, papers that have been recycled, copied, or plagiarized will be detected. Any submitted paper that has any similarity with old papers will be flagged and be considered as plagiarized.