Limitations of urease test in diagnosis of pediatric Helicobacter pylori infection

Table 1 The studies about the positivity rate of urease test by comparing to biopsy sites and biopsy numbers

Ref.	Published year	No. subjects	Mean age (yr)	Comparison	Positivity rate of urease test (%)
Siddique et al[24]	2008	100 adults	36.1	One biopsy	52
				Two biopsies	68
				Three biopsies	76
				Four biopsies	96
Seo et al[19]	2014	255 children	NA	One biopsy	32.2
				Three biopsies	40.1
Moon et al[25]	2012	214 adults	53.6	Antrum	58.9
				body	62.1
				Antrum + body	69.2
Lan et al[26]	2012	164 adults	NA	Antrum	83.3
				Antrum + corpus	100

NA: Not available.