Latest AAB MT Basic Knowledge Practice Test

What agency approves new test methodologies, instruments, and reagents before they are available for purchase by consumers? - ANSWER FDA How often should biological safety hoods be inspected? - ANSWER Annually What is the minimum number of standards required for a standard curve? - ANSWER 3 What is the maximum magnification using a brightfield microscope? - ANSWER 1000X What is the most accurate pipette for reconstituting control material? - ANSWER Glass volumetric pipettes Which unit of measure refers to 10^-3? - ANSWER Milli- What is the calculated cholesterol/HDL ratio given the following results? Cholesterol 225 mg/dL HDL 75 mg/dL - ANSWER 225/75= 3.00 200 microliters of patient serum is diluted with 800 microliters of saline. What is the final dilution? - ANSWER 1:5 What is the calculated LDL cholesterol given the following lipid profile results? Triglycerides 190 mg/dL Cholesterol 225 mg/dL HDL 75 mg/dL - ANSWER LDL = Total cholesterol - HDL - (TG/5) 112 = 225 - 75 - (190/5) How is relative centrifugal force calculated? - ANSWER 1.18 x 10^-5 x r x rpm^2 A chain of custody is required for all of the following: - ANSWER Legal blood alcohol, pre-employment drug screen, and paternity testing A chain of custody is required for all of the following, EXCEPT: - ANSWER Fetal fibronectin What federal legislation regulates most clinical laboratories? - ANSWER Clinical Laboratory Improvement Amendments (CLIA) What is the level of complexity of most testing performed in clinical laboratories? - ANSWER Moderately complex How often does CLIA require clinical laboratories to have inspections? - ANSWER Every 2 years Which laboratories are NOT required to participate in proficiency testing? - ANSWER Laboratories performing waived testing only. Which proficiency testing (PT) results do not meet the CLIA performance criteria? - ANSWER Failed the same analyte in two consecutive PT events Which one of the following is an example of alternate proficiency testing? - ANSWER Split samples sent to another facility using the same test method. All of the following are pre-analytical errors except which one? - ANSWER Transcription error entering a manual result All of the following are pre-analytical erros: - ANSWER Ordering a lab test under the wrong patient number, misidentification of a patient, mislabeling an add-on test Which one of the following is the most common analytical error? - ANSWER Not checking specimen integrity What is the most common post-analytical error? - ANSWER Clerical errors How often must a procedure be reviewed? - ANSWER Annual review is required How often must thermometers be checked against the NIST thermometer? - ANSWER Annually In which manual are the directions for running quality control for a specific assay kept? - ANSWER Operating procedure manual Following equipment maintenance, when is quality control suggested? - ANSWER After any preventative maintenance