Can a hospital call the police on you for a positive drug test when you are a patient?

No, DR's are sworn to secrecy, the only time they can tell anyone else, is if you are going to cause harm to yourself, or someone else. * Based specifically on a positive reading for illegal or controlled substances then no, they would not. However, such hospitals and medical staff are required to release information that is connected with any criminal violation such as a DUI or an assault case, and so forth, when there are indications the person is under the influence of alchohol or a chemical substance.