Methods: a retrospective multicenter cohort study was performed of all endoscopic procedures performed between April 27 and June 15, 2020. A screening questionnaire (SQ) was performed with patients three days prior to the procedure and 14 days after. Furthermore, a serologic SARS-CoV-2 test was performed 48 hours before.
Results: two hundred and eleven consecutive patients with endoscopic procedures were included. No patients had a positive SQ, either on entry to the study or 14 days later. Only four patients (1.9 % [95 % CI: 0.07-4.8 %]) were positive for antibodies.
Conclusion: the pre-endoscopy seroprevalence of SARS-CoV-2 is low in this cohort. Pre-procedural SARS-CoV-2 antibody testing does not add any benefit over clinical SQ to identify active COVID-19 patients.