%0 Journal Article %A A Elfatih %A N R Anderson %A M N Fahie-Wilson %A R Gama %T Pseudo-pseudohypercalcaemia, apparent primary hyperparathyroidism and Waldenström's macroglobulinaemia %D 2007 %R 10.1136/jcp.2006.036756 %J Journal of Clinical Pathology %P 436-437 %V 60 %N 4 %X An apparent primary hyperparathyroidism was reported due to pseudo-pseudohypercalcaemia in a 74–year-old man with Waldenström’s macroglobulinaemia. It is important to recognise artificially elevated serum calcium levels so as to avoid erroneous diagnosis, unnecessary investigations and potentially inappropriate treatment. %U https://jcp.bmj.com/content/jclinpath/60/4/436.full.pdf