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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?

Binding to thrombin (C) Signup and view all the answers

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

Calcium and magnesium-dependent enzymes (C) Signup and view all the answers

Which of the following is true about plasma and serum?

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

Which of the following anticoagulants binds to thrombin?

Lithium heparin (A) Signup and view all the answers

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

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

When is citrate commonly used as an anticoagulant?

When blood is collected for transfusion (B) Signup and view all the answers

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

Fibrinogen (A) Signup and view all the answers