Is there such thing as dirty blood?

Hi! This is going to sound a tiny bit ridiculous, but I panic every time I see the thing that you measure blood pressure with. That is why, during AP bio, when we had to test our blood pressure, I came out with 146 over 80. I'm a VERY health person....

What is an antibody test called as in the formal name? If taken a antibody test does it detect all the antibodys in your blood if u had any? And what its comming from ? Can a normal blood test detect antibodies? There are lots of different test for antibodys...

Do you know anyone who've never been mixed and is a pure blood, like the race horses?

I Gave blood last Friday and my blood stopped flowing into the bag. They moved the needle around a bit and got it flowing again. Now though I have a normal bruise and a not normal bruise. The not so normal bruise is still red and looks somewhat like...

So i went in the tub (i know, kinda gross cause im sitting in blood, but it relaxes me cause i get alot of cramps) and i see a "jellyfish" "swimming" around, and i got kinda freaked. i then figured out that it was blood from my period...

I had a stain on my sock, which I treated with hydrogen peroxide and it began to bubble. Is blood the only thing that could do this? I really have no idea how blood could have gotten on my sock and the stain looked more like dirt than blood, in fact...

it is on my finger it has white around it and the blood is in its own bubble looking thing. I can seperate the blood clotting thing in a very small bubble in the middle. I thought it might be a wart not sure or jsut a blood clot

The Dr told me i had a high blood count and it was pretty thick. Is that the same as high blood pressure??

I'm writing a short story about a hoax, and I need the police in the story to be put off the track for awhile by making fake blood taste like real blood. Real blood has a unique metallic taste. (You know how a cop sometimes dips a finger into a pool...