Through a series of events, we have a urine on which we are keen to provide
a 5HIAA result but the pH is slightly higher than we would normally accept.
The pH of the urine on receipt in the lab is 4.1 and we specify it should
be less than 3. (Most likely there was not enough acid in the bottle.)
Does anyone have data on the stability of 5HIAA in urine at various pHs?
All I can find is a paper by Geeraerts et al. (Clin Chim Acta
1980;102:247-251), but that only gives urine stability at pH 2 and of a
standard solution at pH 2 and 5.6.
Thanks
John Whitfield
Clinical Biochemistry
Royal Prince Alfred Hospital
Sydney.
Phone (61 2) 9515 5246
Fax (61 2) 9515 7931
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