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Figure 1 | Journal of Medical Case Reports

Figure 1

From: Cystic fibrosis presenting as recurrent pancreatitis in a young child with a normal sweat test and pancreas divisum: a case report

Figure 1

Nasal potential difference measurements, patient's left nare. Patients with cystic fibrosis can be differentiated from controls by the measurement of nasal potential differences (NPD). In this study, nasal potential differences were measured using a standardized operating procedure that was developed by a Cystic Fibrosis Foundation clinical trials network to be followed by all sites that perform collaborative studies [1].

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