Cystic Fibrosis: Problems Encountered With Sweat Testing

Beryl J. Rosenstein, Terry S. Langbaum, Ellen Gordes, Saul W. Brusilow

Research output: Contribution to journalArticlepeer-review

18 Scopus citations


The sweat test is the only practical and reliable laboratory test for confirmation of the diagnosis of cystic fibrosis. Among 234 patients referred to The Johns Hopkins Hospital for sweat testing, 62 had had a previous test; 29 tests had been reported as negative, and 33 tests had been reported as positive. Results of quantitative pilocarpine-iontophoresis sweat tests at this center led to a change in diagnosis in 27 (43.5%) of these 62 patients. Most of the errors were false-positive. (JAMA 240:1987-1988, 1978).

Original languageEnglish (US)
Pages (from-to)1987-1988
Number of pages2
JournalJAMA: The Journal of the American Medical Association
Issue number18
StatePublished - Oct 27 1978

ASJC Scopus subject areas

  • General Medicine


Dive into the research topics of 'Cystic Fibrosis: Problems Encountered With Sweat Testing'. Together they form a unique fingerprint.

Cite this