blood test, is it easier or harder?

really if you dont know the answer to this question (((DO NOT POST HERE)))
ok well i was wondering if a Blood test would be easier to pass then a home kit/pee kit?

i am on phase .5 so that means im almost of probation.
but my friend gave me a hash brownie that was about 2"x2".
so i wound up failing my test.
my P-O said its ok he'll let it slide this time, and i have till the fourth to pass a pee test.
could i ask him to give me a recomendation to a blood tester?
and if the weed was eaten is there any chance that it would be in my system longer because i ingested 100% of the THC and ingested THC would have been broken down differently (due to stomach acids and what not)

but what is the true time line of THC in the blood not in the human body.

thanks.

Thc is only detectable in the blood for 3 days. I doubt they'll blood test you. It costs more. I would prefer that drug tests for probation were done with blood instead of urine. Its more reliable to find out if you've done anything in the last few days. With the urine test you could be clean for 60 days and still test positive and the PO is going to on your butt for nothing.