The sign for "blood" is a combination of the signs "red" and "trickle down."
In this example, my left hand (my non-dominant hand) isn't touching
my body. (And is not supposed to either -- so that's good eh?.) The handshape of the
non-dominant hand can be a loose "B" or "4" hand.
Just hold your non-dominant hand in front of your chest, while you
do an abbreviated version of RED with your dominant-hand index
finger and smoothly transition into a "trickle down" movement over
the non-dominant hand (fluttering the fingers of the dominant hand
just a bit as it goes down).
If someone is getting their blood drawn, you can sign that by
starting with a bent-5 hand at the inside crook of the non-dominant
arm. Move the hand forward and down along the arm a bit as you
change the handshape into a flattened "O" shape. (Note: A
bent-5-hand is like a claw-hand but the middle and small knuckles
are straight. The fingers are bent at the large knuckle but
not the other two.)
To sign "blood pressure," use a right "C" hand. Pat the left bicep twice as
if showing the cuff used when taking someone's blood pressure.
Note: You may see some people combine the signs BLOOD and STRESS-(pressure)
to mean "blood pressure."
You can learn American
Language (ASL) online at American Sign Language University ™
by Lifeprint.com © Dr. William Vicars