Table 2.

Analysis of peritoneal fluid samples from 4 horses using routine laboratory tests and immunofluorescence to identify and count neutrophil extracellular traps.

Horse	TNCC/TP	NEUT, %	Bacteria, cytology	Bacterial growth	NET count	NET, %
8	2.3/9	80	N	NA	0/1,068	0
9*	180/47	94	Y	Y	18/1,215	1.5
10†	3.3/11	85	N	NA	NA	NA
11*	221/63	88	N	Y	NA	NA

N = no; NA = not applicable (not performed); NET = neutrophil extracellular trap; NET count = number of NETs divided by number of cells (nuclei); NEUT = neutrophils (differential count); TNCC = total nucleated cell count (× 10⁹/L); TP = total protein (g/L); Y = yes.

^* Horses with peritoneal fluid samples meeting inclusion criteria for septic inflammation.

^† History of antibiotic treatment ≤ 3 days of sample collection.