Blood Collection for Health Professionals 4th Edition by Di

Chapter 2. Venipuncture Equipment Multiple Choice 1. To prevent blood from clotting, the specimen must be A. Collected in a tube containing an anticoagulant B. Inverted an hour after collection C. Centrifuged right after collection D. Refrigerated immediately ANS: A TOP: Clinical laboratory specimens DIF: Level 1 OBJ: 2.3 2. The main anticoagulant for coagulation studies is A. Ethylenediaminetetraacetic acid (EDTA) B. Sodium citrate C. Heparin D. Oxalate ANS: B TOP: Clinical laboratory specimens DIF: Level 2 OBJ: 2.3, 2.5 3. The difference between plasma and serum is A. Serum contains fibrinogen. B. Serum is obtained from a nonclotted specimen. C. Plasma is obtained from a clotted specimen. D. Plasma contains fibrinogen. ANS: D TOP: Clinical laboratory specimens DIF: Level 1 OBJ: 2