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Patient's self-interpretation of tuberculin skin tests
1Department of Medicine, Beth Israel Medical Center, New York, USA.
Chest
|November 1, 1996
Summary
Patients struggled to accurately interpret their own tuberculin skin tests (purified protein derivative [PPD]). Results indicate that healthcare professionals should always confirm PPD test interpretations for accurate diagnosis.
Area of Science:
- Infectious Disease
- Immunology
- Public Health
Background:
- Tuberculin skin testing (purified protein derivative [PPD]) is a common diagnostic tool.
- Patient inconvenience in returning for PPD test interpretation is a practical challenge in outpatient settings.
Purpose of the Study:
- To evaluate patient self-interpretation accuracy of PPD tests.
- To determine if patients can reliably read their own PPD test results.
Main Methods:
- Patients underwent PPD skin testing and anergy control tests.
- Participants attempted to interpret their test results before professional evaluation.
- Interpretation accuracy was compared between patient and nurse assessments.
Main Results:
- Only 1 out of 18 patients correctly identified a positive PPD test reaction.
- Positive anergy control tests were correctly interpreted by 10 out of 27 patients.
- Significant discrepancies were observed between patient and professional PPD interpretations.
Conclusions:
- Patient self-interpretation of PPD tests is unreliable.
- Factors such as education level and cultural background may influence interpretation accuracy.
- Healthcare professionals must verify PPD test results to ensure accurate diagnosis and management.