OXALATES Gray Color Tube Chelating Agent Quiz

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Which of the following is the most recommended anticoagulant concentration for coagulation studies?

3.2% sodium citrate (correct)
0.109M sodium citrate
3.8% sodium citrate
1.5 mg/mL EDTA

What is the purpose of using EDTA in blood collection tubes?

To prevent coagulation by binding calcium in the blood
To measure packed cell volume (PCV)
To clump white blood cells and platelets
To preserve cellular morphology if a blood smear is made immediately (correct)

Which type of EDTA is recommended by CLSI and ICSH for hematology tests?

Na2EDTA (versene)
Sodium citrate
K3EDTA (sequestrene)
K2EDTA (spray dried) (correct)

What is the purpose of using heparin in blood collection?

For blood gas analysis and osmotic fragility testing (C) Signup and view all the answers

What is the purpose of using sodium citrate as an anticoagulant?

To prevent coagulation by binding calcium in the blood (C) Signup and view all the answers

What is the potential issue with underfilling a blood collection tube containing EDTA?

Excessive EDTA can damage the red blood cell membrane (A) Signup and view all the answers

What is the primary function of oxalates in blood collection tubes?

To chelate calcium ions (A) Signup and view all the answers

Which anticoagulant is commonly used for blood banking and has a lifespan of 35 days?

Citrate Phosphate Dextrose Adenine-1 (CPDA-1) (D) Signup and view all the answers

Which substance is used as an antiglycolytic agent to prevent glycolysis in blood samples?

Sodium fluoride (C) Signup and view all the answers

Which of the following tests can be affected by the use of potassium oxalate as an anticoagulant?

Complete blood count (CBC) (C) Signup and view all the answers

What is the primary advantage of using serum instead of plasma for laboratory testing?

Serum has no anticoagulants, preventing interference (B) Signup and view all the answers

Which of the following statements about serum is true?

Serum is more stable than plasma for certain substances (A) Signup and view all the answers

Which statement about combination systems for blood collection is correct?

They combine the blood collection tube and collection apparatus into a single unit. (A) Signup and view all the answers

What is the primary function of anticoagulants in blood collection tubes?

To prevent blood from clotting, allowing for plasma sample production. (A) Signup and view all the answers

Which of the following tests requires the use of an anticoagulant such as EDTA?

Complete Blood Count (CBC) (B) Signup and view all the answers

What is the primary mechanism by which anticoagulants like EDTA prevent clotting?

Both binding calcium and inhibiting thrombin formation (A) Signup and view all the answers

Which of the following tests is typically performed on a blood sample collected in a tube containing an anticoagulant?

Packed Cell Volume (PCV) estimation (D) Signup and view all the answers

Which of the following statements about erythrocytes (red blood cells) is correct?

Erythrocytes contain hemoglobin, which binds oxygen. (C) Signup and view all the answers