1) The pre-analytical phase includes:, A) Only sample analysis, Only patient preparation, All procedures before the analytical phase, Result interpretation, The pre-analytical phase accounts for:, Few laboratory errors, Most laboratory errors, No laboratory errors, Only analytical errors, The recommended anticoagulant for coagulation testing is:, EDTA, Heparin, Sodium citrate, Fluoride, Platelet poor plasma (PPP) requires centrifugation at:, 500 g for 5 min, 2000 g for 10 min, 100 g for 20 min, 3000 g for 2 min, PT and APTT should ideally be tested within:, 24 hours, 8 hours, 4 hours, 12 hours, EDTA contamination causes:, Short PT, No fibrinogen clot, Increased fibrinogen, Normal PT, Frozen PPP should be thawed at:, Room temperature, 37°C rapidly, On ice, 4°C, Hemolysis may cause:, False shortening of clotting time, No effect, Decreased hemoglobin only, Increased platelets, Samples should be mixed by:, Vigorous shaking, Vortexing, 3–6 gentle inversions, No mixing, Tourniquet time should not exceed:, 30 seconds, 2 minutes, 1 minute, 5 minutes, FVIII and VWF are lost when whole blood, Room temperature, -70°C, 4°C, 37°C, Overfilling a citrate tube may cause:, Excess citrate, Insufficient anticoagulation, Hemolysis, No change, Underfilling a citrate tube leads to:, Shortened clotting time, No effect, Prolonged clotting time, Increased platelets, The correct blood to anticoagulant ratio in citrate tube is:, 1:9, 9:1, 8:2, 10:1, Hemostasis samples should be, On ice, 37°C, Room temperature, 4°C.

Hemostasis

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