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Molecular Methods in Clinical Microbiology (Online CE Course)

(based on 475 customer ratings)

Author: Cathy Dragoni, MT(ASCP)SM
Reviewers: Dawn Morong, BS, MT(ASCP), CLS(NCA); Michele Marshall, MT(ASCP)

This course offers a historical look at the progression of molecular methods used in the clinical laboratory. The advantages of these molecular methods over traditional microbiology are discussed, along with the requirements and challenges faced during implementation in a routine clinical setting. Basic methods and molecular techniques are described, including the principle reactions of some assays of current interest for infectious diseases.

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Continuing Education Credits

P.A.C.E.® Contact Hours (acceptable for AMT, ASCP, and state recertification): 1.5 hour(s)
Course number 578-012-17, approved through 2/28/2019
Florida Board of Clinical Laboratory Personnel Credit Hours - General (Microbiology/Mycology/Parasitology): 1.5 hour(s)
Course number 20-547787, approved through 9/1/2020

Objectives

  • Describe some of the history of molecular methods and their introduction into the routine diagnostic laboratory.
  • Describe some of the advantages of molecular methods over traditional microbiology.
  • Describe the requirements and some of the challenges of implementing molecular methods in the setting of a routine clinical microbiology laboratory.
  • Describe the principles of the basic methods of molecular techniques.
  • Describe some of the assays of current interest for infectious disease and their principles of reaction.

Customer Ratings

(based on 475 customer ratings)

Course Outline

Click on the links below to preview selected pages from this course.
  • Some History of Development
      • Prior to 1985
      • Chlamydia trachomatis and Neisseria gonorrhoeae
      • Human Papilloma Virus (HPV) and Mycobacterium
      • Hepatitis and Viral Load Testing
      • Initially, why were molecular methods difficult to perform in routine clinical laboratories? (Choose all that apply.)
      • Why were Chlamydia and Neisseria logical targets for the development of a commercial molecular assay? (Choose all that apply.)
  • Potential Benefits of Molecular Methods over Traditional Microbiology
      • The Key Benefits: Improved Sensitivity of Detection
      • The Key Benefits: Improved Sensitivity of Detection, continued
      • The Key Benefits: Specificity of Identification
      • The Key Benefits: Reduced Turnaround Time
      • In traditional culture or antigen detection methods, the sensitivity of detection is adversely affected by which of the following? (Choose all that ap...
      • Why can molecular methods offer improved turnaround times over cultivation methods? (Choose all that apply.)
  • Challenges for Implementing Molecular Microbiology
      • Challenges for Implementation: Space Requirements
      • Challenges for Implementation: Separation of Key Activities
      • Challenges for Implementation: Workflow Requirements
      • Challenges for Implementation: Required Work Skills
      • Challenges for Implementation: Cost
      • Why is it important to consider work space and workflow design for molecular methods? (Select all that apply.):
      • Molecular testing entails precise workflow requirements. Technologists must progress through a series of steps in a specific order to ensure quality r...
  • Definitions and Principles of Basic Methods
      • Categories of Methods
      • Polymerase Chain Reaction (PCR)
      • Reverse Transcriptase Polymerase Chain Reaction (RT-PCR)
      • Detection and Identification of Polymerase Chain Reaction (PCR) Products
      • Detection and Identification of Polymerase Chain Reaction (PCR) Products: Advantages of Real-Time PCR
      • What are the two general categories of nucleic acid amplification (NAA) techniques?
      • Polymerase chain reaction (PCR) copies DNA through repeated cycles of three basic steps. What is the correct order of these steps? (Choose the BEST an...
  • Assays of Interest for Infectious Disease: Staphylococcus aureus and Methicillin-resistant S. aureus (MRSA)
      • Identification of Staphylococcus aureus with Peptide Nucleic Acid (PNA)-Fluorescence In Situ Hybridization (FISH)
      • Detection and Identification of Methicillin-resistant Staphylococcus aureus (MRSA) by Polymerase Chain Reaction (PCR)
      • Development of Assays
      • Molecular Versus Culture - Pros and Cons
      • Current and Future Prospects
      • What is successful molecular identification of methicillin-resistant Staphylococcus aureus (MRSA) based upon? (Choose the BEST answer)
      • Potential disadvantages of molecular methods for methicillin-resistant Staphylococcus aureus (MRSA) include:
  • Assays of Interest for Infectious Disease: Influenza and Other Respiratory Viruses
  • Assays of Interest for Infectious Disease: Clostridium difficile
      • Clinical Significance
      • Previous Methodologies: Culture and Cell Cytotoxicity Neutralization Assay (CCNA)
      • Previous Methodologies: Antigenic Detection of Toxin and Glutamate Dehydrogenase (GDH)
      • Molecular Methods
      • BD GeneOhm™
      • illumigene®
      • Several methods of detection are available for the detection of Clostridium difficile in clinical samples. Which methods have the capability for detec...
      • What statements are TRUE about the glutamate dehydrogenase (GDH) assay for Clostridium difficile? (Choose all that apply.)
  • References
      • References

Additional Information

Level of instruction: Intermediate 
 
Intended audience: Medical laboratory scientists, medical technologists, and technicians, working in the microbiology section of the laboratory. This course is also appropriate for clinical laboratory science students and pathology residents.
 
Author information: Catherine Dragoni, MT(ASCP)SM received her BS degree in medical technology from the State University of New York, Upstate Medical Center, Syracuse. She began her career as a bench microbiologist at Maine Medical Center, Portland, Maine. Currently she is the Assistant Chief Technologist of Microbiology and Molecular Pathology at NorDx Laboratories, Scarborough, Maine.
 
Reviewer information: Dawn Morong, BS, MT(ASCP), CLS(NCA) received her BS degree from the University of New England, Biddeford, Maine. She is currently a Senior Medical Technologist at NorDx Laboratories in Scarborough, Maine.
 
Michele Marshall, MT(ASCP) received her BS degree in Medical Technology from the Rochester Institute of Technology in Rochester, NY after performing a one year internship at Region’s (St. Paul Ramsey Medical Center) Hospital in St. Paul, MN.  Michele worked for many years as a generalist before making the transition to her real passion in microbiology. Currently, she is the Laboratory Coordinator and the Microbiology Lead Technologist at Mid Coast Hospital in Brunswick, Maine.
 
Course description: This course offers a historical look at the progression of molecular methods used in the clinical laboratory. The advantages of these molecular methods over traditional microbiology are discussed, along with the requirements and challenges faced during implementation in a routine clinical setting. Basic methods and molecular techniques are described, including the principle reactions of some assays of current interest for infectious diseases.

CDC PCR diagnostic testkit
Accessed on 11-31-09 from: http://www.cdc.gov/H1n1flu/images.htm
Derivative melting curve
PCR Reaction
PNA FISH probes
Real-time PCR Stages
RNA-DNA-copying.JPG

Keywords

These are the most common topics and keywords covered in Molecular Methods in Clinical Microbiology:

authorization amplify assay isothermal respiratory bdna chlamydia cdna toxins slightest roche blood mycobacterium fluorescent drug methicillin capital infections primers amplicor platform health transcription organisms evaluation cobas#174 sensitivity xpert glutamate employing influenza stewardship methods tcdb methicillin-resistant antigenic conditions pathogen identification neisseria toxigenic turnaround infection amplified simultaneous diseases nucleotides prospects branched amplicons introducing prodesse aerosol clinicians digene dehydrogenase pipetting vial multiplex one-step denaturation differential antibiotic fluorogenic samples swine-lineage laboratory quenched cytotoxin management transcriptase protocols peroxidase increasingly pathogens reagents meca quencher clinical diagnostic cellular transport hairpin contains antimicrobial gen-probe coagulase labeled smartcycler#174 workflow probes numbers neutralization improvements methodology hospital obstacle procedurally enzyme toxin circulating cultivation primer culture stranded specimens diagnostics infectious entails gene heated instilling volumes microbiology ligase orfx antibody disease hybrid anneal novel ccna aureus aliquot controls platforms organism nucleic pipette pna-fish lengths cytotoxicity annealing virus non-culture cepheid infection control cultivate beacons incubation prospect procedures rt-pcr cells diagnosis cepheids vaccine geometrically real-time treatment subtyping polymerase emission geneohm#8482 conserved staphylococcus antigen swine seasonal clostridium illumigene#174 hybridization logical grant identifying staphylococci thermocycler requirements contamination cooled substrate transcriptase-polymerase vancomycin entail specificity fluorescence exogenous beacon delays immunoassay assays amplification
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CDC PCR diagnostic testkit
Accessed on 11-31-09 from: http://www.cdc.gov/H1n1flu/images.htm


Derivative melting curve


PCR Reaction


PNA FISH probes


Real-time PCR Stages


RNA-DNA-copying.JPG