1. Decreased diameter of the tube 2. Using old blood ...

★ ESR (RBC sed rate) Quiz

1. Decreased diameter of the tube
2. Using old blood collected longer than 2 hrs
3. Temperature decrease below 20ºC
4. incorrect anticoagulant to blood ratio
5. air bubbles
6.Partially clotted samples (uses up fibrinogen).

A. fall faster,
increasing ESR

B. fall slower,
decreasing ESR

Select your answer:

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