Vacutainer Green Top Tubes

Additive: Heparin (sodium, lithium, or ammonium) Purpose: Used for plasma determinations in chemistry tests Blood Type: Collects plasma (prevents clotting) Ideal For: Electrolytes, ammonia, and certain specialized chemistry assays Handling: Mix gently by inverting 8–10 times immediately after collection to prevent clot formation Volume: Varies by manufacturer; commonly 2–10 mL