Measurement of chloride concentration in microvolume samples of sweat.
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.
Nathanson
I
I
Nemours Children's Clinic, Jacksonville, FL 32247.
Tucker
M
M
Jones
L
L
D002713:Chlorine / Q000032:analysis*; D006801:Humans; D007478:Iontophoresis; D008832:Microchemistry; D010862:Pilocarpine; D013542:Sweat / Q000737:chemistry*
D010862:Pilocarpine; D002713:Chlorine