Question

why are edta specimens obtained before other specimens when collected by skin puncture? to prevent contamination from carryover. to minimize tissue fluid contamination. to minimize effects of platelet clumping. to reduce negative effects of hemolysis.

Explanation:

EDTA specimens are collected first by skin - puncture to prevent contamination from carry - over of additives from other tubes. Other options like minimizing tissue fluid contamination, minimizing platelet clumping effects, and reducing hemolysis negative effects are not the main reasons for this order of collection.

Answer:

To prevent contamination from carryover.