We have been experiencing problems with inadequate sweat collection in the
past few months. Our equipment, clinic room and protocols have not changed
for some years. The equipment has been checked by the electronics
department. We use standard pilocarpine iontophoresis sweat induction
followed by collection with the Wescor Macroduct . I prefer the Wescor
product because the lab staff find it simpler and it avoids the errors
frequently experienced with weighings and calculations when using the
traditional filter paper collection. The problem seems more frequent with
Afro-Carribeans and Asians than with white Europeans. Comments and advice
appreciated.
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