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Blood tubes and preservations - Coggle Diagram
Blood tubes and preservations
Serum tube with(out) gel; Clotted blood (CB)
Testing section
Chemistry
Serology
Immunology
Take patient serum for testing by centrifugation
e.g. ion
Red cap
Compartment
upper: serum
lower: RBCs and gel
gel allow primary sampling and storage
Lithium Heparin
Green cap
Testing section
Stat and blood gas (pH)
renal function
lung function
introduces a staining artifact (smears look a pink-purple) which blood smear examination
contain Lithium
Lithium does not react with ion
can be used for testing ion concentration
Minimal chelating properties
NOT
haematologic testing
platelet and leukocytes frequently clump in heparin
erroneous counts
Heparin
anti-clotting
lowering clotting rate
urgent
pregnant women
vein
artires
acidosis? akalosis
Sodium citrate
Contain 3.2% sodium citrate
citrate bind to calcium
preventing blood clotting
citrate anticoagulant
diluting blood
Testing section
Coagulation (platelet)
potassium EDTA
contain potassium (K+)
binding to calcium
preventing blood clotting
Testing section
blood typing
morphology
Compartment
upper: plasma
middle: WBCs
lower: RBCs
blood morphorology
blood film (without centrifuge)
sodium fluoride and oxalate
grey cap
compartment
upper: plasma
lower: RBCs
contain sodium, fluoride and potassium
testing section
glucose
Lavender cap
contain cation (K+)
can react with anion