American College of Gastroenterology guidelines now recommend that whenever Helicobacter pylori infection is identified and treated, eradication testing is offered to the patient. Testing for eradication of H pylorimay be performed using urea breath test, fecal antigen test, or biopsy-based testing.[4]Chey WD, Leontiadis GI, Howden CW, Moss SF. ACG clinical guideline: treatment of helicobacter pylori Infection. Am J Gastroenterol. 2017 Feb;112(2):212-39.
https://journals.lww.com/ajg/Fulltext/2017/02000/ACG_Clinical_Guideline__Treatment_of_Helicobacter.12.aspx
http://www.ncbi.nlm.nih.gov/pubmed/28071659?tool=bestpractice.com
One study has demonstrated that serological biomarkers such as pepsinogens I and II, gastrin-17, and H pylori IgA/IgG antibodies (markers of gastric mucosal status) show a high degree of accuracy as a non-invasive method to diagnose corpus atrophy, a common occurrence in the general population, although the clinical role of these markers is unclear at present.[89]Storskrubb T, Aro P, Ronkainen J, et al. Serum biomarkers provide an accurate method for diagnosis of atrophic gastritis in a general population: the Kalixanda study. Scand J Gastroenterol. 2008;43(12):1448-55.
http://www.ncbi.nlm.nih.gov/pubmed/18663663?tool=bestpractice.com
[90]van Marrewijk CJ, van Oijen MG, Paloheimo LI, et al. Influence of gastric mucosal status on success of stepwise acid suppressive therapy for dyspepsia. Aliment Pharmacol Ther. 2009 Jul;30(1):82-9.
http://www.ncbi.nlm.nih.gov/pubmed/19309389?tool=bestpractice.com
Patients with non-steroidal anti-inflammatory drug (NSAID)/alcohol-associated erosive gastritis refractory to symptomatic therapy may require a follow-up endoscopy with biopsy.[35]Park WG, Shaheen NJ, Cohen J, et al. Quality indicators for EGD. Gastrointest Endosc. 2015 Jan;81(1):17-30.
https://www.giejournal.org/article/S0016-5107(14)02050-1/fulltext
http://www.ncbi.nlm.nih.gov/pubmed/25480101?tool=bestpractice.com
Patients with diffuse atrophic gastritis and vitamin B₁₂ deficiency should have close follow-up with tests for serum vitamin B₁₂ levels, methylmalonic acid levels, or homocysteine levels to determine response to treatment.[25]Toh BH, van Driel IR, Gleeson PA. Pernicious anemia. N Engl J Med. 1997 Nov 13;337(20):1441-8.
http://www.ncbi.nlm.nih.gov/pubmed/9358143?tool=bestpractice.com
The risk of gastric adenocarcinoma and carcinoid tumours with atrophic gastritis and/or autoimmune gastritis is uncertain; however, atrophic pangastritis, severe intestinal metaplasia of the body of the stomach, and age >50 years all increase the risk for developing gastric neoplastic lesions in patients with atrophic gastritis.[91]Vannella L, Lahner E, Osborn J, et al. Risk factors for progression to gastric neoplastic lesions in patients with atrophic gastritis. Aliment Pharmacol Ther. 2010 May;31(9):1042-50.
http://onlinelibrary.wiley.com/doi/10.1111/j.1365-2036.2010.04268.x/full
http://www.ncbi.nlm.nih.gov/pubmed/20175768?tool=bestpractice.com