Thanks for the prompt reply.

The reason I listed 25ng/ml in my post was based on the fact that the home test cut offs are 50ng/ml. And if the maximum possible half-life for thc metabolite elimination is 10 days, then in my mind it would follow that you would be at 25ng/ml or less 10days after the first home test you pass.

So while I may not have been clear in my original post I don't suspect that I would be taking a 20ng/ml test but that is why my other question in the original post was about the LabCorp CoC form that didn't have the test specified or a number of any sort other than just '5 panel'.
marcopolo1 Reviewed by marcopolo1 on . Lab Corp/Home Test Line Speed/Half Life Question. Ok have a couple questions rolled into one here. I've done some searching and didn't come up with exactly the info I was looking for so if i missed it my apologies. Anyway got a Labcorp pre-employment UA coming up in a few days. I've had tests in the past from quest that actually show a number you can lookup that specifies the test NIT something maybe? This one here doesn't have anything to that effect all it says is '5 Panel' for tests requested. So should I assume that this is 50ng/ml Rating: 5