Hb Tacoma is difficult to detect and may cause false results with different HbA1c methods​Britta Landin Soheir Beshara Johan Eskils Maria Nilsson Sara Karlsson Niklas Bark Per Bjellerup a Department of Clinical Chemistry, Karolinska University Hospital, Stockholm, Swedenb Department of Laboratory Medicine, Karolinska Institutet, Stockholm, Swedenc Department of Molecular Medicine and Surgery, Karolinska Institutet, Stockholm, Swedend Department of Clinical Chemistry, Blekinge Hospital, Karlskrona, Swedene Centre for Clinical Research Västmanland, Uppsala University, Västerås, Swedenf Department of Laboratory Medicine, Central Hospital Västmanland, Swedenon August 25, 2025 at 6:29 am