How easy is it to contaminate a synthetic specimen?

So last week a friend found out he'd be having a drug test, today, August 7th 2013. He decides to order quickfix 5.7 canadian version overnight. Everything goes off without a hitch, except one thing he forgot to shake the bottle of synthetic before pouring it into the cup. So he used a thermometer he had to stir it. He's tripping out pretty badly over two things, did he contaminate it using the thermometer to stir the specimen? He had previously touched the thermometer's tip with his hands after touching the steering wheel of his vehicle and door handles, etc.,etc. Also, did stirring it instead of shaking it even work? On the directions, the part about shaking it BEFORE HEATING, AFTER HEATING, AND BEFORE POURING are in BOLD text.

He's nearly having a panic attack because he's one, kind of a pussy, and two this is a huge job opportunity for him. He had no idea though and the drug test caught him completely off guard with not time.

I'm a long time lurker, used information on the forums to pass my own piss test not too long back. I decided if I was going to try and get him some peace of mind, signing up here would be my best shot.

Any advice is appreciated!

&Thanks for reading:)