Specimen HandlingCâu 70 / 100
Which specimen requirement applies to an erythrocyte sedimentation rate?
a.It should be tested within about four hours at room temperature
b.It must be protected from light
c.It must be frozen if not tested within one hour
d.It requires a serum separator tube
Giải thích
An ESR is performed on a well-mixed EDTA specimen and should be set up within about four hours at room temperature, because red cells lose their normal shape over time and settle differently. Freezing destroys the cells, and light does not affect sedimentation. A serum tube is unusable because the test requires anticoagulated whole blood.
Trích dẫn luật: CLSI GP44Luyện miễn phí toàn bộ 100 câu hỏi — không cần đăng ký.
Câu hỏi liên quan cùng chủ đề
- An unlabeled tube arrives in the laboratory with a completed requisition attached. What is the correct action?
- An EDTA specimen is collected for a CBC with a manual differential. What time limit applies to making the blood smear?
- A gel serum separator tube has already been centrifuged and the serum is above the gel. A repeat test is requested. What should be done?
- Unless a test specifies otherwise, at what temperature are routine blood specimens transported?
- A tube is submitted with far less blood than the test requires. How is this documented as a rejection reason?
- A routine urinalysis cannot be tested for 90 minutes. What is the correct interim handling?
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