+
Related Flashcards
Related Topics
Cards In This Set
| Front | Back |
|
Lavender Top
|
Contains either K3EDTA (liquid) or K2EDTA (spray-coating).
Prevents coagulation by binding to Calcium. Invert tube 8 times. |
|
What is the lavender tube commonly used for?
|
Hematology procedures that require whole blood, such as Complete Blood Count (CBC). Lavender tubes are also used for immunohematology testing and blood donor screening.
|
|
What can the lavender tube not be used for?
|
Coagulation studies
|
|
Pink Top
|
Contain spray-coated K2
EDTA.
Used specifically for blood bank in some facilities. Designed with special labels for patient information. Invert 8 times. |
|
White Top
|
Known as PPTs (Plasma Preparation Tubes) because they contain
K2 EDTA and a separation gel.
Used primarily for molecular diagnostics. Can also be used for Myocardial Infarction (MI) panels and ammonia levels. Invert 8 times. Can also be purple with a yellow top. |
|
Why are white tubes different from PSTs?
|
Plasma Separator Tubes (PSTs) contain heparin as an anticoagulant.
|
|
Black Top
|
Contain buffered sodium citrate.
Used for Westergren sedimentation rates. Differ from light blue tops because they provide a blood to anticoagulation ratio of 4 to 1. |
|
Green Top
|
Contains Heparin (anticoagulant) combined with lithium, sodium, or ammonium ion.
Primarily used for chemistry tests performed on whole blood or plasma. -Particularly stat tests or tests requiring fast TAT (turn around time) Invert 8 times Not used for hematology. |
|
How does heparin prevent clotting?
|
By inhibiting thrombin in the coagulation cascade.
|
|
Light Green Top
|
*Can also be a green/black stopper.
*Contains lithium heparin and a separation gel. -Called Plasma Separator Tubes (PSTs) *Used for plasma determinations in chemistry *Used for potassium determinations. |
|
Which tube is used for potassium determinations?
|
Light Green tube
|
|
Why are light green tubes used for potassium determinations?
|
They are well-suited for potassium determinations because Heparin prevents the release of potassium by platelets during clotting AND
because the gel prevents contamination by red blood cell potassium. Invert 8 times. *Also green w/ yellow top |
|
PST tubes, SST tubes, and gel barrier tubes all contain:
|
A gel barrier
|
|
Tan Top
|
Contains K2EDTA
Invert 8 Times Used for lead determinations |
|
Yellow Top (ACD)
|
Contains ACD = acid citrate dextrose which is a red blood cell preservative
Used for *Cellular studies in blood bank *HLA Phenotyping *DNA and paternity testing-Acid citrate prevents clotting by binding to calcium-dextrose preserves the red blood cells |
