im not sure, but i do want to tell you this, i just took my test with the QF at LabCorp and im telling you its almost to easy. Get the Temp right and youre GOLDEN. I walked in the room shut the door and did my duty. as for your question with the 2oz, the guy said fill it to 45 ml at least, the QF was 60!

good luck!
Schmokey78 Reviewed by Schmokey78 on . LabCorp Pre-Employment test Hello everyone I've got a drug test for a new job coming up. It's at a LabCorp facility, next Mon. It has been 21 days since I last smoked, however was smoking chronically prior (about 1-2 times a day) What is my best option? Number -1? Rating: 5