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Measurement of chloride concentration in microvolume samples of sweat
I Nathanson1, M Tucker, L Jones
1Nemours Children's Clinic, Jacksonville, FL 32247.
Pediatric Pulmonology
|May 1, 1994
Abstract:
Measuring sweat Cl concentration requires multiple steps. Following pilocarpine iontophoresis we compared Cl concentrations of sweat obtained on gauze pads to microvolumes (5 microL) collected into capillary tubes (N = 111). Chloride concentrations obtained by these two methods correlated significantly (r = 0.95; P < 0.001), indicating that Cl concentration can be measured accurately and easily on small volumes.