Objective: To assess the prevalence of functional vitamin B12 deficiency status in an adult Jordanian seemingly healthy population.
Methods: We carried out this study in the Department of Physiology, Faculty of Medicine, Jordanian University of Science and Technology, Jordan from September 2004 to January 2005. We included a randomly selected sample of 216 healthy adult volunteers (male 124, female 92, aged 19-50 years) from north Jordan.