ea0018p31 | (1) | MES2008
Ramachandran Radha
, Benfield Patricia
, White Sara
, Chapman Richard
, Meeran Karim
, Donaldson Mandy
, Martin Niamh
Aim: Population studies have shown that basal calcitonin concentrations are below 10 ng/l in the normal population. Ten nanograms per liter is used as a diagnostic cut-off by most laboratories and patients with levels higher than this are offered a pentagastrin stimulation test to exclude medullary thyroid carcinoma. However, these guidelines were adopted from studies that used the Cisbio Immunoradiometric assay for measuring calcitonin. Most laboratories have now moved to che...