A 6 hour wait?! That's insane. I would have stopped going to.

From what I have read, the high B12 can be a marker for cancer. I just wonder if it would be high because I had cancer already. My T4 is within range but on the lower end.

I guess I have to be a little more proactive with seeking out different medical advice from professionals. As opposed to waiting 2 months for a retest.

Thanks for the input Paul!

Edward, 64 yrs
7/21/2016 Dx BOT stage 4 w additional tumors neck & left lymph node
8/15/2016 began Tmt EBT w Cesplatin 1x week for 8 wks.
Feeding tube and port.
10/17/2016 finished treatment. CT still shows tissue. Dr. Says 60% chance it is scar tissue.
01/13/2016 PET Scan shows no sign of cancer.