In a high school blood drive, how much blood do they take?

I had my first one today.

pmc1232010-10-15T13:01:29Z

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All blood donations are 1 pint. They draw a few extra vials for testing, but the bag needs to be filled to be consistent.

Zarn2010-10-15T13:00:55Z

All of it.

Nah, just kidding.

Usually about a pint, like per normal.