Latest AAB MT Exam General Knowledge General Operations

What are four types of centrifuges commonly used in the clinical lab? - ANSWER Tabletop, Micro, High-Speed, and Ultra. What does the daily maintenance of a centrifuge commonly consist of? - ANSWER Cleaned with 10% bleach What does the periodic maintenance of a centrifuge commonly consist of? - ANSWER Speed check by tachometer What is the function of a centrifuge in the clinical lab? - ANSWER To separate substances based on density by centrifugal forces. What is the RCF formula? - ANSWER 1.118 -5 X 10 X r X rpm2 What is the maintenance for semi-automated pipets? - ANSWER They must be calibrated and verified by gravimetric method. What does a pipet with two etched rings at the top mean? - ANSWER The liquid must be blown out. To deliver uses what force to ensure that the correct volume is pipetted? - ANSWER Gravity What type of pipet has a bulb with a tapered tip? - ANSWER Volumetric What does a graduated line mean on a pipet? - ANSWER The measuring line. What is the most common pipet in the clinical lab? - ANSWER To deliver pipet What are dark field microscopes used for? - ANSWER Identification of spirochetes What are electron microscopes used for? - ANSWER Identification of tissue tumor markers What are florescent microscopes used for? - ANSWER Classically used to detect ANA and acid fast stains. What are phase contrast microscopes used for? - ANSWER Used for manual platelet counts. What are polarized microscopes used for? - ANSWER To identify crystals. What is the bright field microscope used for? - ANSWER Gram stains and routine hematology slides. What are the three levels of testing as defined by CLIA? - ANSWER Waved, moderately complex testing, and highly complex testing. A Provider Performed Microscopy (PPM) is an example of what level of complexity testing? - ANSWER Moderately complex testing. What are the two main components of an FDA approved Waved Testing? - ANSWER So simple that anyone can perform the test and that there are no serious side affects of performing the test incorrectly. What are some common waved tests? - ANSWER Urine dipstick, urine pregnancy, and whole glucose testing. Define Pre-analytical patient test management. - ANSWER Factors that affect results of a laboratory test that occur before the process of performing the test. Define Analytical patient test management. - ANSWER Factors that affect results of a laboratory test that occur during the process of performing the test. Define Post analytical patient test management. - ANSWER Factors that affect results of a laboratory test that occur after the process of performing the test. The JOINT Commission requires how many identifiers to be used for patient testing? - ANSWER Two A Qualitative test most contain? - ANSWER A positive and a negative control. A Quantitative test most contain? - ANSWER Two controls of different concentration.