Journal
LABORATORY MEDICINE
Volume 50, Issue 3, Pages 286-291Publisher
OXFORD UNIV PRESS
DOI: 10.1093/labmed/lmy083
Keywords
tuberculosis; complete blood cell count; neutrophil-to-lymphocyte ratio; neutrophil-to-monocyte-plus-lymphocyte ratio; infectious lung diseases; pneumonia
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Objective: To determine whether NMLR has more statistical strength than NLR in discriminating TB from non-TB infectious lung diseases. Methods: Among patients who underwent 3 or more TB culture tests with molecular study between January 2016 and December 2017, 110 patients with TB, and 159 patients diagnosed with non-TB infectious lung diseases were enrolled. The original complete blood count (CBC) parameters and modified CBC indices, including NLR and NMLR, were analyzed. Results: The NLR and NMLR were significantly lower in TB patients than in patients with other infectious lung diseases. However, the area under the curve (AUC) for NMLR (0.90; 95% confidence interval [CI], 0.86-0.93) was significantly greater than that for NLR (0.88 [0.84-0.92]). Conclusions: The neutrophil-to-monocyte-plus-lymphocyte ratio (NMLR) can be used as a new index that is more powerful than neutrophil-to-lymphocyte ratio (NLR) in discriminating tuberculosis (TB) from non-TB infectious lung diseases. NMLR had more statistical strength than NLR in discriminating TB from non-TB infectious lung diseases.
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