Table 4.

Variations occurring in the level of acute phase proteins upon viral infection (Slaats et al. 2016)

APPs	Viral and bacterial infection	References
C-reactive protein, PCT (procalcitonin)	Triggered both bacterial and viral infections but gain elevated values during bacterial infections	Lannergård et al. (2003), Gendrel et al. (1999)
Ferritin	Elevated in viral infections	van de Weg et al. (2014), van de Veerdonk et al. (2012)
LPS-linked protein, sTREM-1 myeloid cells expressing soluble activated receptor	Higher during bacterial infections vs viral infections	ten Oever et al. (2012)
Neutrophil lipocalin	Higher during bacterial infections	Venge et al. (2015)
Retinol	Decreased during infections	Thurnham et al. (2003)