Any major Engine Distributor or dealer can sell you the program, Chuck. They furnish the containers and the pump and advise you how to take the sample. You mail it in, it's approved by the USPS...and wait for the report which they will mail to your home of office.
Ususally it's not a one shot deal...they want you for a specific period of time..to be determined by the contract.
Otherwise a one time sample could get expensive.
My opinion? If you were working in a lab which ran 1000's of samples through every month and it was a same old s--- every day....how enthusiastic could you get if you found a bit more copper than usual in the sample? Not likely. In today's world...if I were to give the lab a rating of 1-10 for being conscientious...I'd be conservative...like Simon...and give 'em a 5.
But then...I'm the eternal cynic!