The American Civil Liberties Union of Indiana is suing the State Medical Licensing Board over a new state law.
The suit is over a new Indiana rule requiring patients prescribed certain amounts of pain medications to submit to annual drug tests.
The ACLU says the rule violates the Fourth Amendment protection against unreasonable government searches.
The ACLU filed on behalf of a Hamilton County man who's been prescribed pain medications for more than 18 years for chronic pain from several health problems.
They say that requiring drug tests for patients violates their rights.