Turnitin is software that is used to detect the plagiarism. It is available for universities and other institutions. It depends on where you have bought the paper or if it is written from the scratch?
If the paper is written from scratch then it does not able to detect the plagiarism.
Being a custom essay writing service provider, this was the question that most of the students used to ask.
The tool is now getting more advanced and will be able to detect the paraphrasing in future.