Tumor marker tests usually require 5-10 mL of blood.
1 ml blood is ok for blood culture
alot.
Cancer cells don't need much more blood than any other cell - the problem is when there is a collection of cancer cells in a tumor. The tumor as a whole is rapidly dividing (usually), so it needs a great deal of energy and nutrients to do that. Nutrients are brought into the body's tissues by circulating blood, which is why many tumors develop angiogenesis properties (the ability to create new blood vessels).
2-4mls
7
20%
About half a syringe full.
ever
ever
1. Both wastes and needed materials, such as glucose, are removed from the blood. 2. Much of the needed material is returned to the blood.
A standard marker typically weighs around 0.5-1 ounce.
There's no range in guaiac testing. The choices of results are negative or positive.