Accu Reference Medical Lab Interview Questions

5) Why pipetting training is crucial for clinical technician?

By having a proper pipette training, always helps to minimize the risk of volume variability caused by Operators, also a small fraction of the change in pipetting can give you the wrong result.

An aliquot is the known amount of homogeneous material, used to minimize the sampling error. It is usually used when fractional part is an exact divisor of the whole.

9) Explain what is the difference between sterilization and disinfection?

  • Sterilization: The thorough sterilization of all microbes present on the surgical instrument is referred as Sterilization
  • Disinfection: While reducing the total number of microbes below the risk level is referred as Disinfection
  • 12) Explain what clinical lab audit is and what are the areas you can do clinical audit?

    A clinical lab audit is done in order to maintain and operate the lab at a standard level. The area that includes in clinical audit are

  • Specimens: To check the patient register and see whether the specimen was received at the right time
  • Turnaround time: To check whether the specimen was tested and returned at allocated time, and if delayed how to improve it
  • GLP: To check whether the test methods carried out follows the standard procedures
  • Purchasing equipment’s, reagents and other lab instruments
  • Laboratory reports: To check whether they are precise and clear and look for any area for improvement
  • Storage of reagents and specimens
  • Safety policies and procedures: Use of dangerous substances should be audited, and every single accident in the lab should be recorded.
  • Previous Companies:

  • Accu Reference Medical Lab
  • Langton Green Inc
  • Medstar Southern Md Hospital
  • 7) What are the different techniques for placing samples in micro-scope?

    Different techniques used for placing samples under micro-scope are

  • Dry Mount: You simply put section of specimen with a cover slip over a sample
  • Wet Mount: Samples are placed under various liquid medium like glycerine, water, brine and water
  • Smear Slides: In this technique, sample is smear over the slide and on top it another slide is placed without forming bubbles
  • Squash Slides: In this technique, lens tissue is used over the wet mount, and it will remove excess water
  • Staining: Stains such as iodine, methylene blue and crystal violet is used to stain the specimen
  • 13) Explain what is laboratory centrifuges?

    Laboratory Centrifuge is primarily used for testing liquids and substances for clinical trial samples. This device uses the centrifugal force to separate the liquids from the main sample or mixture.

    When sample is rotated into centrifuge, it will separate the mixture according to the density. Supernatant is the upper layer found in the sample after it is run into centrifuge.

    15) What are the steps you can take to avoid imbalance in centrifuge?

    To avoid an imbalance in centrifuge it requires

  • Balanced loading of the centrifuge rotor
  • Even number of tubes should be loaded facing each other or in the opposite direction
  • When odd number of tubes are loaded make sure, you make it even with adding one more tube with an equal amount of water of that of the sample tube
  • Blank term is used to refer the sample tube which does not contain the analyte.

    19) What do you mean by a confirmatory test?

    For unambiguous identification of drug or metabolites in the sample, alternative chemical method is used also known as a second test.

    11) What are the factors on which the gas sterilization depends on?

    Gas sterilization depends on factors like

  • Concentration of the gas
  • Humidity
  • Time of exposure
  • Temperature
  • Nature of the load
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