Table 1: Analytic data of the four serological markers in relation to histological diagnosis.

Histological diagnosisNumber of patientsAge (years) (mean ± SD)PCA (U/mL) (mean ± SD)
(cutoff 30)
IFA (U/mL) (mean ± SD)
(cutoff 20)
Gastrin (pg/mL) (mean ± SD)
(cutoff 115)
Anti-Hp positivity
(%)

Group 1: autoimmune gastritis30 26.0
Group 2: gastric atrophy14 * * * 0*
Group 3: non-specific lymphocytic gastritis18 * 21.1
Group 4: multifocal atrophic gastritis21 * * * 100*

PCA: anti-parietal-cell antibodies; IFA: anti-intrinsic-factor antibodies; anti-Hp: anti-Helicobacter  pylori antibodies; *statistical significance ( ).