Many times, I have read or heard that we can, and should, consider Patriarchal Blessings to be scripture to us. We must be very careful to never apply something we learn in our own Patriarchal Blessing to other people, nor should we attempt to derive doctrine from someone else's blessing.
I see my Patriarchal Blessing like scripture to me because it tells me where I came from and why I am here. It also tells me what my mission is on earth and what I need to do to return to my heavenly father. I especially like to read it when I am feeling down or depressed it makes me feel better.
I would say no, but with an asterisk. Scripture is Gods written words meant for the masses. I would call it personalized written revelation from God. I would consider the word of the Prophet, when speaking in his role as a prophet, scripture. It would be along the same lines as having a very personal revelation. Very sacred to you, but not considered "scripture"