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We never dilute our B12 results. Literature does not point towards any evidence that high results are of much clinical value. Anyone with a different view please correct me. Regards, Sutirtha Chakraborty On 09-Dec-2016 4:26 PM, "Leifur Franzson" <[log in to unmask]> wrote: > Dear listmembers. > > There are patients "out there" with elevated B12 levels without being on > supplementation. > > I have seen two patients with B12 values around 1000 and 1500 pmol/L > respectively, both in good health. (Ref levels 210-800 pmol/L). > > Patients with elevated B12- levels are recommended to be evaluated further > for several malignancies.. > > I would like to ask the listmembers how high values you have seen and what > limits are you recommending for further medical actions ? > > > > Best regards > > Leifur Franzson MScPharm > Specialist in Clinical Biochemistry > Clinical Associate Professor > Department of Genetics and Molecular Medicine > Landspitali, Hringbraut > Iceland > > > Fyrirvari / Disclaimer > http://www.landspitali.is/disclaimer/ ------ACB discussion List > Information-------- This is an open discussion list for the academic and > clinical community working in clinical biochemistry. Please note, archived > messages are public and can be viewed via the internet. Views expressed are > those of the individual and they are responsible for all message content. > ACB Web Site http://www.acb.org.uk Green Laboratories Work > http://www.laboratorymedicine.nhs.uk List Archives > http://www.jiscmail.ac.uk/lists/ACB-CLIN-CHEM-GEN.html List Instructions > (How to leave etc.) http://www.jiscmail.ac.uk/ ------ACB discussion List Information-------- This is an open discussion list for the academic and clinical community working in clinical biochemistry. Please note, archived messages are public and can be viewed via the internet. Views expressed are those of the individual and they are responsible for all message content. ACB Web Site http://www.acb.org.uk Green Laboratories Work http://www.laboratorymedicine.nhs.uk List Archives http://www.jiscmail.ac.uk/lists/ACB-CLIN-CHEM-GEN.html List Instructions (How to leave etc.) http://www.jiscmail.ac.uk/