Every physician, or other person, attending in a professional capacity a pregnant woman in Illinois, shall take or cause to be taken a sample of blood of such woman at the time of the first examination, and a second sample of blood shall be taken or caused to be taken during the third trimester of pregnancy. These blood specimens shall be submitted to a laboratory approved by the Department of Public Health for a serological test for syphilis approved by the State Department of Public Health. In the event that any such blood test shall show a positive or doubtful result an additional test or tests shall be made. Such serological test or tests shall, upon request of any physician, be made free of charge by the State Department of Public Health or the Health Departments of cities, villages and incorporated towns maintaining laboratories for the testing of blood specimens of any woman who resides in that city, village or incorporated town.
     The provisions of this Section shall not apply to any woman who objects to such serological tests on the grounds that such tests are contrary to her religious beliefs and practices.