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sweat test and low growth/failure to thrive
- Question
- I would like to ask what are the chances for a child to have low growth, a negative sweat test and have CF? What can a parent do to exclude the possibility of the disease? Thank you.
- Answer
- Dear friend
In a child with low growth or failure to thrive, i.e. it does not gain weight and has many bowel movements, the cause may be pancreatic insufficiency. The sweat test suffices to exclude the possibility of CF, since the CF patients with pancreatic insufficiency always have a positive sweat test.
Your child does not have any chance to suffer from CF, provided that the sweat test is negative and has been performed in an experienced CF-center (using the pilocarpine ionotophoresis measuring the chloride concentration in the sweat).
Yours friendly,
Dr. Stavros Doudounakis
- 11.06.2012
