PCT	procalcitonin
CRP	C-reactive protein
WBC	white blood cell
CDI	Clostridioides difficile infection
IBD	inflammatory bowel disease
ROC	receiver operating characteristic
CD	Crohn’s disease
UC	ulcerative colitis
NAAT	nucleic acid amplification test
PCR	polymerase chain reaction
EIA	enzyme immunoassay
GDH	glutamate dehydrogenase
EBV	Epstein–Barr
CMV	cytomegalovirus
HSV-1	herpes simplex virus type 1
HSV-2	herpes simplex virus type 2
LR	positive likelihood ratio
IL-6	interleukin-6
TNF-α	tumor necrosis factor-α
IL-1β	interleukin-1β
IFN-γ	interferon-gamma