ArticleInfection and drug resistance2025
Clinical Utility of Monocyte-to-Lymphocyte Ratio and Prognostic Nutritional Index in Diagnosing Smear-Negative Pulmonary Tuberculosis with Negative IGRA Results.
Article in Infection and drug resistance, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Objective: To evaluate the diagnostic usefulness of the monocyte-to-lymphocyte ratio (MLR) and the prognostic nutritional index (PNI) in smear-negative pulmonary tuberculosis (SN-PTB) patients with a negative interferon-γ release assay (IGRA) result. Methods: Between January 2021 to December 2024, 548 consecutive patients suspected of having SN-PTB were enrolled at the Second People's Hospital of Fuyang. After exclusion, 276 patients with SN-PTB (SN-PTB group) and 272 with non-tuberculous (Non-TB) pulmonary infection (Non-TB group) were retrospectively analyzed. Laboratory parameters-including albumin (ALB), pre-albumin (PALB), C-reactive protein (CRP), fibrinogen (FIB), IGRA result, T-cell subsets (CD3 Results: In the IGRA-negative subgroup (SN-PTB group: n = 25; Non-TB group: n = 184), MLR was significantly higher in the SN-PTB group ( Conclusion: MLR, PNI and their combination offer moderate diagnostic value for SN-PTB when the IGRA result is negative; the combined MLR+PNI index performs better than either marker alone. However, these findings should be interpreted with caution due to the limited sample size in the IGRA-negative subgroup, and further validation in larger cohorts is warranted.
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