Serum measurements of human neutrophil lipocalin (HNL) discriminate between acute bacterial and viral infections
1995 (English)In: Scandinavian Journal of Clinical and Laboratory Investigation, ISSN 0036-5513, Vol. 55, no 2, 125-131 p.Article in journal (Refereed) Published
Human neutrophil lipocalin (HNL) is a recently identified protein from human neutrophil granules. The concentrations of HNL in the circulation were measured, in a group of patients with acute infections, using a radioimmunoassay. The concentrations of HNL in patients infected by viruses and bacteria were 93.78 +/- 45.30 micrograms l-1 (SD), 404.14 +/- 355.02 micrograms l-1 (SD) in serum, and 47.81 +/- 18.18 micrograms l-1 (SD), 145.46 +/- 194.32 micrograms l-1 (SD) in plasma, respectively. The differences between the two patient groups were highly significant. There was a significant correlation between serum HNL and plasma HNL levels in bacterial infections (r = 0.73, p < 0.0001). The HNL serum levels also correlated with those of C-reactive protein (CRP) (r = 0.59, p < 0.0001). Determination of HNL in serum was more specific and sensitive than CRP in the distinction between viral and bacterial infections. At a cut-off of 155 micrograms l-1 (HNL in serum), the positive and negative predictive values for the diagnosis of bacterial infections were 92 and 96%, respectively, which were superior to the optimal predictive values of CRP. Thus, the determination of HNL level is useful in the diagnosis of acute bacterial infections.
Place, publisher, year, edition, pages
1995. Vol. 55, no 2, 125-131 p.
C-reactive protein, diagnosis, predictive value, radioimmunoassay, sensitivity, specificity
Medical and Health Sciences
IdentifiersURN: urn:nbn:se:uu:diva-55393PubMedID: 7667605OAI: oai:DiVA.org:uu-55393DiVA: diva2:83301