Complete blood tests and tests for serum gastrin, chromogranin A, ferritin and Vitamin B12 were performed. The presence of H pylori was established by biopsies of samples taken endoscopically from the antrum.
Las pruebas de laboratorio realizadas fueron hemograma, gastrina sérica, cromogranina A, ferritina y B12, la presencia del H pylori se estableció por la biopsia antral a la endoscopia.