> What age? - increases by around 50% with age.
Ages 20 to late 70s.
We saw the age related increase in females not males.
A few young males had levels in the nines and tens.
> See recent papers about apparently high prevalence of primary
> hyperparathyroidism in Australia based on somewhat controversial
> diagnostic criteria (since parathyroid nodularity is common - at least
> 5% of random autopsy studies - highish PTH + normal calcium +
> high-normal PTH + apparent nodularity does not a diagnosis make).
All patients had total calcium <2.55mmol/L, no ionised calcium
available.
> Clearly reference ranges are also critical.
Agreed, that is why I want to establish the appropriate range.
> We use the Immulite as well, and don't see many healthy values above 9pmol/L
> or so.
What reference range / ranges do you use? Are they age related?
Samuel Vasikaran
Royal Perth Hospital
Western Australia
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|