I use 2 different ones depending on where my Test level will be. I think it's the private MD labs one that cuts the Test off at 1500. It's the quest one where you can get your Test level when it's higher. It costs about $25.00 more and takes a couple days longer.
Privatelabsmd uses lab corp, theres another place that uses quest. I saw it initially on evo eary this year and jumped on it but now i cant find who in the hell it was.