Sweat Electrolytes Test
(Sweat Test)

Alternate Names

  • Sweat Electrolytes
  • Iontophoretic Sweat Test

Cystic fibrosis (CF) is an inherited disease that causes increased sweating, increased mucus production from the ducts of the gallbladder, liver and pancreas, and well as within the lungs and intestines. The amount of sodium and chloride present in sweat can be measured, and an increase in these levels is very specific for the diagnosis of CF. Sweat analysis will be done when cystic fibrosis is suspected in children with numerous respiratory tract infections, digestion and absorption problems, and retarded growth. Sweat analysis is also used to screen the siblings of children that are known to have cystic fibrosis.


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