order of draw
Medical term Routine Blood Collections
CLSI venous tube sequence that stops additive carryover: blood cultures, sodium citrate, serum tubes, heparin, EDTA, then fluoride/oxalate. Capillary order differs.
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Related terms
- additiveAnything put in a collection tube on purpose, such as an anticoagulant, clot activator, separator gel or…
- capillaryThe smallest blood vessel, where oxygen, nutrients and wastes pass between blood and tissue. A skin puncture…
- CLSIClinical and Laboratory Standards Institute: a nonprofit that writes consensus lab standards, such as GP41…
- EDTAEthylenediaminetetraacetic acid: binds calcium to keep blood unclotted; the lavender-top additive for…
- heparinAnticoagulant that blocks thrombin. Green-top tubes hold lithium or sodium heparin for plasma chemistry; it…
- serumThe liquid left after blood clots and is centrifuged; it lacks the clotting factors used up in the clot…
- needle hubThe base of a needle that attaches to the holder or syringe; a flash of blood appears there when the vein is…
- needle safety deviceBuilt-in feature, such as a shield or a retracting needle, engaged right after the needle leaves the vein to…
- nerve injuryDamage to a nerve by the needle: electric-shock-like or stabbing pain, tingling or numbness. Remove the…
- neutrophilGranular white cell that is most plentiful in blood; it is first to reach infected tissue, where it swallows…
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