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30Background: It has been demonstrated that short term intravenous (IV)

CONSORT 2010 checklist of information to include when reporting a randomised trial* Section/Topic Item No Checklist item Reported on page No Title and abstract 1a Identification as a randomised trial in the title 1b Structured summary of trial design, methods, results, and conclusions (for specific guidance see CONSORT for abstracts) *We strongly recommend reading this statement in conjunction with the CONSORT 2010 Explanation and Elaboration for important clarifications on all the items. If relevant, we also recommend reading CONSORT extensions for cluster randomised trials, non-inferiority and equivalence trials, non-pharmacological treatments, herbal interventions, and pragmatic trials.

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Sleeve gastrectomy has increased in popularity over the last five years and it is likely to supersede gastric banding. Nevertheless, it is unclear whether vitamin B12 supplementation is required after surgery. The aim of this short report is to identify any vitamin B12 deficiency and highlight the necessity of post laparoscopic sleeve gastrectomy vitamin B12 monitoring.Patients and methodsA review of 66 patients underwent LSG in our institution. 25 patients were excluded as they had no postoperative vitamin B12 screening. 41 patients were included as screened for vitamin B12 and other micronutrients including selenium, serum folate, ferritin, iron, zinc, copper, magnesium and vitamin D.ResultThere were 5 male (12%) and 36 females (88%), 8/41 patients (20%) had Vitamin B12 deficiency, none of them developed macrocytic anaemia. 17/21 (81%) patient were vitamin D deficient and 9/21 (43%) exhibited low selenium.ConclusionIn this small group, a 20% prevalence of vitamin B12 was identified. As a consequence vitamin B12 monitoring and supplementation will be a standard of care in the early postoperative period after LSG at this institution.