Which of the following is responsible for the most serious laboratory errors?
Answer - Misidentifying the patient
Indicate the correct order that blood should be drawn by placing 1, 2, 3, or 4
after the appropriate item: Answer - Blood culture ,plain tube, coag , purple
top
Forcing blood drawn in a syringe into a lavender tube could result in: Answer -
Hemolysis
Of the following tubes, which color is acceptable for testing if the blood is
clotted? Answer - Red
Of the following tubes, which color is acceptable for testing if the blood is
clotted? Answer - Red
Where on a manual smear will larger cells such as blasts be found? Answer -
Feathered edge
Which condition is most likely on a patient with a WBC of 25,000/HL, platelet
count of 11,000/uL, and a left shift including several blasts. Answer - Acute
leukemia
, If a PTT was performed on serum instead of plasma, the result would be:
Answer - Higher than plasma
Which of the following is an acceptable site for blood collection? Answer -
Below a cast
A specimen from a difficult draw has flags for decreased RBC count, decreased
hematocrit, and an increased hemoglobin. What should be suspected? Answer
- Hemolyzed specimen
In the above question, what is the best remedy? Answer - Request new sample
An automated cell counter prints a WBC of 220,000/uL. What other parameters
will affected? Answer - Hgb hct and rbc
Plt formula for hemocytometer Answer - Plt count X dilution aX 10
All nine squares hemocytometer formula Answer - Ave of cells X 2 X
Percent of lymph's that are B cells Answer - 10
A cell counter prints a platelet count of 36 X103/uL. The manual smear has
platelet clumps. What should be done? Answer - Vortex then redraw
When preparing a cytospin smear, which of the following preserves the cells
and keeps them intact as they are deposited onto the slide is: Answer -
Albumin
Severe lipemia interferes with all of the following EXCEPT: Answer - HCT
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