Got there at 6am and there were already about 80 people ahead of us.
At 6:15 they started handing out tickets. At 7:30 we had ours.
Went inside to sit down and at 7:45 our number came up. Handed over copies of the I-765 and I-485 receipt notices (it speeds up things if they do not have to make the copies) and newly filled out I-765s (they want them).
I got my medicals done in Chennai in early November, thought I would post my experience while it is still fresh in my memory.Note that I am not a Chennai resident - I reached Chennai at 6AM on the test day, and had booked my return the same night. I wanted to finish both the lab and the checkup the same day.
A)Procedure at Lister