The four things you need to take to the test center are as follows:
1) Stethoscope (If you forget they will provide one but it is generally recommended that you take your own)
2) White laboratory coat (If you forget they will provide one but it is generally recommended that you take your own. And of course make sure the pockets are empty!)
3) Scheduling permit
4) Photo ID [Acceptable forms of ID include the following forms of unexpired identification: passport, driver's license with photograph, national identity card, other form of unexpired government-issued identification, ECFMG-issued identification card. Your identification must contain both your signature and recent (no more than 10 years earlier) photograph. If it contains your photograph but not your signature, you can use another form of unexpired identification that contains your signature, such as a student/employee identification card or a credit card, to supplement your photo-bearing, governmentissued identification.]