Specimen HandlingCâu 66 / 100
A lavender tube submitted for a CBC contains visible small clots. What should happen?
a.Run the CBC and add a comment about clots
b.Filter the specimen and then run it
c.Add extra EDTA and mix again
d.Reject the specimen and recollect, because clotting invalidates cell counts
Giải thích
Clots consume platelets and trap white and red cells, so counts are falsely low and the specimen must be rejected and recollected with prompt, adequate mixing. Commenting on a clotted CBC still reports unreliable numbers. Filtering removes cells that should be counted, and adding anticoagulant after the fact cannot reverse clot formation.
Trích dẫn luật: CLIALuyện miễn phí toàn bộ 100 câu hỏi — không cần đăng ký.
Câu hỏi liên quan cùng chủ đề
- Within what time should serum or plasma be separated from cells for routine chemistry testing?
- Which collection practice is most likely to hemolyze a specimen?
- A chemistry specimen arrives visibly hemolyzed. Which result is most likely to be falsely elevated?
- 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?
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