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Related Experiment Videos

Adenosine deaminase in pleural effusions.

M V Nagaraja1, P K Ashokan, H M Hande

  • 1Department of Medicine, Kasturba Medical College Hospital, Manipal, SK District, Karnataka State.

The Journal of the Association of Physicians of India
|March 1, 1992
PubMed
Summary

Adenosine deaminase (ADA) levels in pleural fluid are significantly higher in tuberculous pleural effusion cases. Measuring pleural fluid ADA is a reliable, non-invasive method for diagnosing tuberculosis-related pleural effusions.

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Area of Science:

  • Pulmonology
  • Infectious Diseases
  • Biochemistry

Background:

  • Pleural effusion is a common clinical condition with diverse etiologies.
  • Distinguishing tuberculous pleural effusion from other causes is crucial for timely and appropriate treatment.

Purpose of the Study:

  • To evaluate the diagnostic utility of adenosine deaminase (ADA) levels in pleural fluid for differentiating tuberculous pleural effusion.

Main Methods:

  • Serum and pleural fluid ADA levels were measured in 30 patients with pleural effusion and 18 healthy controls.
  • Statistical analysis was performed to compare ADA levels between groups and assess diagnostic accuracy.

Main Results:

  • Serum ADA levels were significantly elevated in patients with pleural effusion compared to healthy controls (P < 0.001).

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  • Pleural fluid ADA levels were significantly higher in tuberculous pleural effusions (always >50 U/L) than in non-tubercular effusions (P < 0.001).
  • The ratio of pleural fluid ADA to serum ADA did not aid in etiological diagnosis.

    • Conclusions:

    • Pleural fluid ADA estimation is a safe, simple, and reliable non-invasive test.
    • This test effectively distinguishes tuberculous from non-tubercular pleural effusions.