removing liquids from a body at rest

[Brendan]

I have a question.
Supposing one desires to obtain, for specifically non-malevolent purposes, a small quantity of one's own blood;
supposing further that one, by which we mean ourself, desires further to do so while preserving the sanctity of one's own health;
and lastly supposing that one wishes to avoid large incisions unless absolutely necessary,
how might one begin to do this?

[Arthur Emerson]

I've seen my aunt check my diabetic grandfather's blood sugar by pricking the tip of one of his fingers. This produced a small amount of blood and seemed harmless.

Be careful.

-ae

[D.G.]

Incision gives blood but also lymph.  For the blood, the whole blood, and nothing but the blood (ha ha ha), here is a link to vacutainers and other collection supplies. 

[Isis]

You can use any needle, but you have to sterilize them, before you use  them.
For continuing use, think about using also a homeopathic tincture, water and alcohol, putting a drop or two in that.