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Early diagnosis and assessment of the systemic inflammatory response to infection are difficult with usual markers (fever, leukocytosis, C-reactive protein [CRP]). Triggering receptor expressed on myeloid cells-1 (TREM-1) expression on phagocytes is up-regulated by microbial products. We studied the ability of soluble TREM-1 (sTREM-1) to identify patients with sepsis.

Plasma samples were obtained on intensive care unit admission from patients with systemic inflammatory response syndrome for sTREM-1 measurement.

Soluble TREM-1, CRP concentrations and erythrocyte sedimentation rate (ESR) were higher in the sepsis group (n = 52) than in the non-infectious systemic inflammatory response syndrome group (n = 43; P = .00, .02, and .001, respectively). Soluble TREM-1, CRP concentrations, white blood cell count and ESR were higher in the sepsis group …