The best anticoagulant to prevent clotting of specimens, such as blood, bone marrow, and synovial fluid, which are submitted for recovery of all types of microorganisms, is:
a. sodium polyanethol sulfonate (SPS).
b. heparin.
c. citrate.
d. ethylenediaminetetraacetic acid (EDTA).
A
SPS is the least inhibitory anticoagulant, which makes it the best choice for preserving blood, bone marrow, and synovial fluid.
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