Sweat Chloride Test-Reference Range

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A sweat chloride test, also known as sweat test, is often used to diagnose cystic fibrosis (CF). People who will have this test should not take in iodide or bromide, because they may interfere with the sweat chloride test.

Speaking of the test interpretations, they are as follows:

For infants from birth to six months:

  • Chloride concentrations range between 0-29 mmol/L indicates no cystic fibrosis.
  • Chloride concentrations range between 30-59 mmol/L indicates intermediate state.
  • Chloride concentrations equal to or more than 60mmol/L indicates cystic fibrosis.

For infants older than 6 months and adults:

  • Chloride concentrations range between 0-39 mmol/L indicates no cystic fibrosis.
  • Chloride concentrations range between 40-59 mmol/L indicates intermediate state.
  • Chloride concentrations equal to or more than 60mmol/L indicates cystic fibrosis.

Keywords: Iontophoretic Sweat Test; Sweat Chloride; Sweat Chloride Test; Sweat Electrolytes

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