Hello!
Our OR recently has also changed to personal scrubs that we wear in from home. Our entire staff was in an uproar, we all went home and researched AORN standards, JCAHO, etc., printed off copies and brought it to work, all for nothing. Of course management won.

$165 later, I own my very own scrubs.
I too would be very interested in any studies out there.
By the way, not to sound stupid, but what is "ep lab" ?