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What is the minimum number of standards required for a standard curve? - ANSWER3 What is the maximum magnification using a brightfield microscope? - ANSWER1000X What is the most accurate pipette for reconstituting control material? - ANSWERGlass volumetric pipettes Which unit of measure refers to 10^-3? - ANSWERMilli- What is the calculated cholesterol/HDL ratio given the following results? Cholesterol 225 mg/dL HDL 75 mg/dL - ANSWER225/75= 3.00 200 microliters of patient serum is diluted with 800 microliters of saline. What is the final dilution? - ANSWER1:5 What is the calculated LDL cholesterol given the following lipid profile results? Triglycerides 190 mg/dL Cholesterol 225 mg/dL HDL 75 mg/dL - ANSWERLDL = Total cholesterol - HDL - (TG/5) 112 = 225 - 75 - (190/5) How is relative centrifugal force calculated? - ANSWER1.118 x 10^-5 x r x rpm^2 Where should an unopened container of methanol be stored? - ANSWERFlammable safety cabinet Which bloodborne pathogens are of greatest risk to laboratorians? - ANSWERHepatitis B and HIV When a fire occurs, when should the hospital operator be notified of the fire? - ANSWERAfter pulling the alarm What is the accuracy of a volumetric pipette? - ANSWER1:1000 What is the term used to describe a 99.95% purified chemical that can be measured directly referred to as? - ANSWERPrimary standard What is a solution in which the molecules of solute in the solution are in equilibrium with excess undissolved molecules referred to as? - ANSWERSaturated What is the pH of pure water? - ANSWER7.0 Which statistical term most specifically describes analytical precision? - ANSWERCoefficient of variation A procedure has a 2SD variation from a mean value. How many values from a normal population will 2SD include? - ANSWER95.45% To produce reliable results, how long should a patient fast before having blood drawn for lipid studies? - ANSWER12-16 hours How is a 10% bleach solution to disinfect the work area made? - ANSWER100 mL bleach added to 900 mL water Reactivity is what color diamond using the National Fire Protection Agency code? - ANSWERYellow What is a substance that minimizes any change in hydrogen ion concentration? - ANSWERBuffer Which type of specimen provides the fastest turnaround time? - ANSWERWhole blood If the mean for BUN is 18.0 and one standard deviation is 0.15, then what is the acceptable range for this control? - ANSWER17.7-18.3