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Diagnostic applications of DNA probes
1Department of Veterans' Affairs Medical Center, Iowa City, Iowa.
Infection Control and Hospital Epidemiology
|February 1, 1991
Summary
DNA probe assays offer rapid infectious disease diagnosis and detection of difficult-to-culture organisms. However, challenges like cost, sensitivity, and expertise require careful consideration before laboratory adoption.
Area of Science:
- Molecular Biology
- Diagnostic Laboratory Medicine
- Infectious Diseases
Background:
- Molecular biologic techniques are increasingly utilized in diagnostic laboratories.
- DNA probe assays present novel approaches for identifying infectious agents.
Purpose of the Study:
- To review common molecular biologic techniques, specifically DNA probe assays, for infectious disease diagnosis.
- To evaluate the advantages and disadvantages of implementing DNA probe technology in diagnostic settings.
Main Methods:
- Review of current literature on DNA probe assays in infectious disease diagnostics.
- Analysis of potential benefits, including speed and detection capabilities.
- Assessment of limitations, such as cost, sensitivity, and technical expertise.
Main Results:
- Advantages include rapid detection, specimen screening, and identification of nonviable organisms.
- Disadvantages encompass isotopic detection needs, limited sensitivity, slow turnaround, high costs, and reagent availability issues.
- Key considerations for adoption include cost-effectiveness, prevalence of agents, equipment needs, and result interpretation.
Conclusions:
- DNA probe technology offers significant potential but requires careful evaluation of its pros and cons.
- Successful implementation necessitates addressing cost, prevalence, infrastructure, and result validation.
- Effective use demands collaboration between laboratorians and clinicians for intelligent application.