Collection ProceduresCâu 21 / 100
How should an EDTA tube be mixed immediately after collection?
a.Shake vigorously five times
b.Invert once and place upright in the rack
c.Invert gently 8 to 10 times
d.Do not mix; the additive dissolves on its own
Giải thích
EDTA tubes require roughly 8 to 10 gentle inversions so the anticoagulant coats all the blood and microclots do not form. Vigorous shaking introduces mechanical trauma and hemolysis, which invalidates many tests. A single inversion or no mixing at all leaves clotted or clumped specimens that the laboratory must reject.
Trích dẫn luật: CLSI GP41Luyện miễn phí toàn bộ 100 câu hỏi — không cần đăng ký.
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