Vet Tech Clinical Chemistry Questions With Complete Solutions

Idexx Catalyst and advantage correct answer: newer improved blood chemistry profile machine -don't have to test all 16 components of blood chemistry at once, can test more than one sample at once What is needed for Sample Collection correct answer: blood, plasma or serum Blood should be (preferred) correct answer: preprandial Preprandial correct answer: animal fasted for 12 hours GI profile requires a correct answer: 16 hour fast Specific protocols for clinical chemistry depend on... correct answer: 1. Patient species 2. volume of blood needed 3. method of restraint 4. type of sample needed Label tubes with... correct answer: 1. owners last name 2. date and time of collection 3. test to be performed whole blood sample contains correct answer: 1. fluid (plasma) 2. cells (erythrocytes, leukocytes, thrombocytes) 3. anticoagulant blood should be stored correct answer: refrigerated, do not freeze always warm to room temperature Anticoagulants and color of tube top correct answer: 1. Heparin - green 2. EDTA - purple 3. Sodium citrate - blue If don't have green top tube for heparinized blood sample... correct answer: Use heparinized syringe and put into plain red top tube What is the most preferred anticoagulant for plasma samples and why correct answer: heparin; interferes least with chemical assays heparin how much to use correct answer: 20 units/ml of blood prevents clotting (coating inside of syringe) which anticoagulant is used for blood gas analysis correct answer: heparin EDTA stands for correct answer: ethylenediaminetetraacetic acid EDTA is used for correct answer: routine hematology true or false... EDTA alters cells morphology correct answer: false When NOT to use EDTA correct answer: when using plasma samples problems with sodium citrate correct answer: interferes with many chemical tests when to use sodium citrate correct answer: used for clotting profiles and blood transfusions plasma is made up of correct answer: 90% water, 10%