Table 1

Median and range calprotectin levels (mg/l) in the studies of Roseth et al, Kristinsson et al, and Kronborg et al

Study	No of patients	Range	Median	Sensitivity (%)
Roseth (1993)¹
Controls	49	0–12	2.5
Polyps	40	1.5–160	16	80
CRC	53	4–1000	40	95
Kristinsson (1998)²
Controls		0–12	2.5
CRC	119	2–950	52	93
Kronborg (2000)
Controls	488	5–7	7
Polyps	300	5–10	9	43
CRC	23	12–31	18	73

CRC, colorectal cancer.