So labcorp was a private testing place? Id hate to get in there and have someone pat me down or observe.
If this is an employment-related U/A, the collector cannot touch the donor in any way. That constitutes "groping" and is against the law. The collector can only instruct the donor to remove hats, jackets, and emptying the pockets.
Also, employment-related U/A's are unobserved unless the donor had been suspected of tampering, or exhibits any behavior which indicates intent to tamper.