Quick Review Cards for Medical Laboratory Science

Recommended Order for Filling Microcollection

Tubes From Capillary Punctures

Laboratory Operations Review 20

TEST/TUBE RATIONALE FOR ORDER

Blood gases Minimizes exposure to air

EDTA Minimizes clumping of platelets

Other additive tubes Minimizes clotting

Serum tubes Clotting is not a concern

(CLSI H4-A6, 2008)