Falsely elevated serum vitamin B12 levels in a case of pernicious anemia

Affiliations

• ¹ Department of Haematology-Oncology, National University Cancer Institute, Singapore, National University Health System, 5 Lower Kent Ridge Rd, 119074, Singapore, Singapore. edwin_thong@nuhs.edu.sg.
• ² Department of Laboratory Medicine, National University Hospital, National University Health System, 5 Lower Kent Ridge Rd, 119074, Singapore, Singapore.
• ³ Department of Haematology-Oncology, National University Cancer Institute, Singapore, National University Health System, 5 Lower Kent Ridge Rd, 119074, Singapore, Singapore.