A novel biomarker in the diagnosis of parapneumonic effusion: neutrophil gelatinase-associated lipocalin

Table 2 Correlation between serum and pleural fluid NGAL levels and constant variables

	Serum NGAL		Pleural fluid NGAL
	Spearman’s correlation coefficient (r=)	p	Spearman’s correlation coefficient (r=)	p
Age	0.109	0.337	0.093	0.410
CRP	0.473	<0.001	0.293	0.008
WBC	0.579	<0.001	0.445	<0.001
Neutrophils	0.504	<0.001	0.433	0.001
Sedimentation rate	0.347	0.002	0.107	0.347
LDH	0.457	<0.001	0.278	0.038
Creatinine	0.220	0.050	0.080	0.480
Pleural leukocytes	0.286	0.036	0.075	0.589
Pleural neutrophils	0.471	0.003	0.089	0.596
Pleural NGAL	0.366	0.001

ISSN: 2049-6958