How often must the partial thromboplastin time (PTT) reference interval be determined?
A) only when both the normal and abnormal controls are outside their acceptable limits
B) at least every 6 months
C) with each new lot of reagent
D) only when the normal control is outside its acceptable limits
Correct Answer:
Verified
Q1: Which of the following is an acceptable
Q2: Which of the following is necessary for
Q4: Which of the following will cause spuriously
Q5: Which of the following is an acceptable
Q6: Which of the following is good practice
Q7: A patient sample has normal platelet aggregation
Q8: A patient admitted to the hospital with
Q9: Which of the following conditions would have
Q10: A patient is stabilized on warfarin with
Q11: How often must controls be run for
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