On turnitin website they have a plagiarism checker for "students". It's a different site from turnitin but is associated with the company. The only difference, if I remember correctly, is it doesn't have the database of the prior students that turned in a personal statement. Hypothetically, if you took a paper from a prior pharm student the student website wouldn't detect it as plagiarized while turnitin would. All the student website does is check online sites.