A specimen laboratory question

[FriendlyMan]

Hi,

Anyone here work in a laboratory or have personally researched this topic?

I'd appreciate professional experience or own experience answers please.

How long does it really take for cigars to completely get out of a person's system.
Wether it blood or urine sample.

Someone I know has to go through some testing and would rather they don't know he smokes cigar's.
I told him one thing for sure. Drinking a few glasses water won't do magic. Maybe that and waiting a week. But I'm not sure.


I once had to go through this once. And lucky it was before I got in to stogies.
I think he had like one every morning for a few days this week. But when they notified him at work about this test. The next day he did not have one.
So how many days would you wait until you would go get blood test?

Thanks