Answer :
Final answer:
The metal flea in capillary blood gas collection is used to mix the blood specimen with the anticoagulant in the capillary tube to prevent clot formation.
Explanation:
In the process of capillary blood gas collection, the metal flea serves the purpose of mixing the specimen (option B). This operation is crucial as the metal flea aids in properly combining the collected blood with the anticoagulant in the capillary tube to prevent the blood from clotting too soon. This ensures that the blood specimen remains in a liquid state which makes subsequent analysis more efficient and accurate.
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