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Determining the Serum Stability of Human Adenosine Deaminase 1 Enzyme
Published on: September 27, 2024
Adenosine Deaminase (ADA) Level in Tubercular Pleural Effusion
S K Verma1, A L Dubey, P A Singh
1Department of TB & Chest Diseases, CSM Medical University, Lucknow, India.
Lung India : Official Organ of Indian Chest Society
|February 19, 2010
Summary
Adenosine deaminase (ADA) levels in pleural fluid can help diagnose tuberculosis (TB). Elevated ADA, particularly above 100 IU/L, is a strong indicator of tuberculous pleural effusion.
Area of Science:
- Pulmonology
- Infectious Diseases
- Biochemistry
Background:
- Pleural effusion diagnosis can be challenging.
- Tuberculosis is a common cause of pleural effusion globally.
- Biomarkers are needed for efficient diagnosis.
Purpose of the Study:
- To evaluate the diagnostic value of adenosine deaminase (ADA) levels in pleural fluid.
- To determine the optimal cut-off for ADA in identifying tuberculous pleural effusion.
Main Methods:
- Observational study involving 50 patients with pleural effusion.
- Measurement of pleural fluid adenosine deaminase (ADA) levels.
- Analysis of ADA levels in relation to effusion etiology (tuberculosis, malignancy, hypoproteinemia).
Main Results:
- Pleural fluid ADA levels were significantly higher in tuberculous pleural effusion (36 to 229.7 IU/L) compared to malignancy (18.5 to 87.6 IU/L) and hypoproteinemia (8.21 IU/L).
- A cut-off of 36 IU/L yielded 100% sensitivity and 77.7% specificity for tuberculosis.
- ADA levels exceeding 100 IU/L were exclusively observed in tuberculous pleural effusion.
Conclusions:
- Pleural fluid ADA is a valuable marker for diagnosing tuberculous pleural effusion.
- An ADA level > 100 IU/L is highly specific for tuberculosis.
- ADA testing can aid in differentiating tuberculous pleural effusion from other causes.
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