2nd phlebotomy done and now I know what they mean by Thick blood. Looked like sticky paint. They had to stop 1/2 way through because it stopped coming out. Flushed the line 3x, no change. Tried to pull it out with a Big syringe and it wouldn't come out. Moved the needle a little, no change. Finally it sucked in the clot or whatever was blocking and they were able to take out another 150 ml of so of blood.Hopefully its a little thinner next time.Feritin dropped a bit but still within normal range.