AAB MT Basic Knowledge Questions and Answers

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-MilliWhat 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^2A 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 integrityWhat 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