Third tube
Red (plain top): no additive; commonly requested tests = serology and chemistry tests
(cholesterol, glucose, albumin)
Tiger Top/Gold: Includes gel separator; SST (Serum separator tube), clot activator, gel
separator
All three give you serum. Every other test will give you plasma
Mix 8-10 times
Give this one a try later!
, Serum tubes (red/tiger top/gold)
Leak-proof, puncture resistant
MUST have biohazard sticker by law
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Biohazard sharps containers
Slows down metabolic activity of blood cells
Gives you time to study blood cells
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Preservatives
Stores specimen during/immediately after draw
Used in all three drawing methods
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Evacuated/vacuum tubes
Fourth tube
Anticoagulant: sodium heparin (dark green), lithium heparin (light green), or ammonia