Chapter Questions
Which type of centifuge is often used in a coagulation lab?
Desktop Fixed Rotor
After Blood Collection, when should plasma be centrifuged?
As soon as possible
What is a critical lab value or alert threshold?
Test Results falls either higher or lower than critical limits established by each lab.
What is the first tube in the order?
Blood Cultures
At what point should you invert your tubes?
Immediately following Blood Specimen Collection
What practice will likely cause hemolysis?
Shaking the Tube to mix the content
What Blood specimen should be chilled during a 45-min transport?
Blood Gases
What stays at the top of the tube during centrifugation?
Plasma or serum
The last tube in the order of draw is?
Gray
How many times should you invert your tubes?
5-10 times
What would be considered a preexamination/preanalytical error?
Underfilling the aliquot container
When should serum be removed from blood cells after....?
120 Minutes or 2 hours
What flows to the bottom of the tube during centrifugation?
Cells
The third tube in the order of draw is?
Red
GMC uses this to transport specimens to RAP
Pneumatic Tube System
Which analytes should be protected from light?
Porphyrins
A specimen should be protected from light for this determination.
Bilirubin Concentration
What could cause a serum specimen to take longer to clot?
Blood Thinners or Chilled Specimen
The Fifth tube in the order of draw is?
Green
Means that the substance is sensitive to light and will decompose after exposure to bright light
Photosensitive or Protect from Light
What analyte is photosensitive?
Bilirubin
What blood specimen should be kept warm during transport to the lab?
Cold Agglutinins
How long should you let a serum specimen clot at room temp before centrifugation?
30-60 Min
The Tubes that share EDTA as their additives are?
Lavender and Pink
Means that the substance is sensitive to higher temps
Thermolabiles