week 1 Clinical chemistry Ch. 1-3 questions with complete solutions

clinical laboratory water is used for correct answer: •in preparation of reagents. •as a diluent for controls and calibrators. •to flush and clean internal components of analyzers. •as a medium in heating bath to incubate cuvettes. •to wash and rinse laboratory glassware. Revolutions per minute (RPM) correct answer: is a unit of expressing the number of complete rotations of a rotor occurring per minute. It is a measure of speed. 1.Removes cellular elements from blood to obtain plasma or serum 2.Concentrates elements for microscopic examination 3.Removes chemically precipitate protein 4.Separates protein-bound or antibody bound ligand from free ligand 5.Extracts solutes 6.Separates lipid components such as chylomicrons from other components. correct answer: Centrifuges Clinical and Laboratory Standards Institute (CLSI) correct answer: Sets specifications for water used in the clinical laboratory Distilled water correct answer: first step in demineralization The water is boiled and the steam is collected and condensed to yield distilled water. Deionized water correct answer: made by running tap water, spring water, or distilled water through an electrically charged resin. CLRW Reagent Grade or Type 1 correct answer: Water should be used in test methods requiring minimal interference and maximal precision and accuracy. -Such procedures include trace metal, enzyme, and electrolyte measurements, and preparation of all calibrators and solutions of reference materials. This water should be used immediately after production. CLRW Type III correct answer: water may be used for glassware washing. CLRW Type II correct answer: water is used for general laboratory testing not requiring type I water.