Venipuncture Collection Tubes Flashcards
general order of draw
- blood culture tubes (yellow-black)
- non-additive tube (red)
- coagulation tubes (light blue)
- additive tubes (in this order)
- SST (red-grey or gold)
- sodium heparin (dark green or brown)
- PST (light green)
- EDTA (lavender)
- ACDA or ACDB (pale yellow)
- oxalate/fluoride (light grey)
additive in red top
none
MOA of red top
blood clots and the serum is separated by centrifugation
uses of red top
chemistries, immunology, serology (blood bank/cross match)
additive in gold top
none
MOA of gold top
serum separator tube (SST) contains a gel at the bottom to separate blood from serum on centrifugation
uses of gold top
chemistries, immunology and serology
additive in light green top
plasma separating tube (PST) with lithium heparin
MOA of light green top
anticoagulates with lithium heparin; plasma is separated with PST gel at the bottom of the tube
use of light green top
chemistries
additive of red-gray top
SST with clot activator
MOA of red-gray top
forms clot quickly and separates serum with SST gel at the bottom of the tube
use of red-gray top
chemistries
additive of lavender top
EDTA liquid
MOA of lavender top
forms calcium salts to remove calcium
uses of lavender top
hematology (CBC) and blood bank (crossmatch)
special note for lavender top
requires full draw and inversion 8x to prevent clotting and platelet clumping
additive of light blue top
sodium citrate
MOA of light blue top
forms calcium salts to remove calcium
use of light blue top
coagulation tests (PT and PTT)
special note for light blue top
requires full draw
additive of dark green top
sodium heparin or lithium heparin
MOA of dark green top
inactivated thrombin and thromboplastin
uses for dark green top
- for lithium level: uses sodium heparin
2. for ammonia level: uses sodium or lithium heparin
additive of dark blue top
sodium EDTA
MOA of dark blue top
tubs is designed to contain no contaminating metals
uses of dark blue top
trace element testing (zinc, copper, lead and mercury) and toxicology
additive in large gray top
sodium fluoride and potassium oxalate
MOA of large gray top
actiglycolytic agent preserves glucose up to 5 days
use of large gray top
- for lithium level: uses sodium heparin
2. glucose level requires full draw (hemolysis id short draw)
additive of yellow top
ACD (acid-citrate-dextrose)
MOA of yellow top
complement activation
use of yellow top
HLA tissue typing, paternity testing, DNA studies
additive in yellow-black top
broth mixture
MOA of yellow-black top
preserves viability of microbes
use of yellow-black top
microbiology - aerobes, anaerobes and fungi
additive of black top
sodium citrate (buffered)
MOA of black top
forms calcium salts to remove calcium
uses of black top
Westergren Sedimentation rate
special note for black top
requires full draw
additive in orange top
thrombin
MOA of orange top
quickly clots blood
use of orange top
STAT serum chemistries
additive in brown top
sodium heparin
MOA of brown top
inactivates thrombon and thromboplastin
use of brown top
serum lead determination