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How are finger-stick dried blood spot and venipuncture blood serum different?

April 26, 2017blood different dried finger-stick serum spot venipuncture

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How are finger-stick dried blood spot and venipuncture blood serum different?

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First, one is “whole” blood drawn from the end of the finger. This is mostly capillary blood as opposed to blood drawn from the arm, which is venous blood. The former contains nutrients, hormones, and oxygen to feed the tissues. The latter is partially spent of these life-giving components and is returning to the heart, lungs, and gastrointestinal tract to pick up another load.