Anticoagulants in Laboratory Practice

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Questions and Answers

Which anticoagulant is commonly used in laboratory practice?

  • Lithium heparin (correct)
  • EDTA
  • Citrate
  • All of the above

What is the main difference between plasma and serum?

  • Presence of calcium and magnesium
  • Presence of fibrinogen (correct)
  • Presence of albumin
  • Presence of globulins

Which anticoagulant is used when blood is collected for transfusion?

  • Lithium heparin
  • EDTA
  • Citrate (correct)
  • All of the above

What is the role of heparin in preventing clotting?

<p>Binding to thrombin (C)</p> Signup and view all the answers

Which enzymes involved in the clotting cascade are affected by EDTA and citrate?

<p>Calcium and magnesium-dependent enzymes (C)</p> Signup and view all the answers

Which of the following is true about plasma and serum?

<p>Plasma contains fibrinogen while serum does not. (B)</p> Signup and view all the answers

Which of the following anticoagulants binds to thrombin?

<p>Lithium heparin (A)</p> Signup and view all the answers

What is the main role of EDTA and citrate as anticoagulants?

<p>To interfere with the action of calcium and magnesium-dependent enzymes (B)</p> Signup and view all the answers

When is citrate commonly used as an anticoagulant?

<p>When blood is collected for transfusion (B)</p> Signup and view all the answers

Which of the following is NOT a major group of serum proteins?

<p>Fibrinogen (A)</p> Signup and view all the answers

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