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Pathology Services Updates

Change in Sweat Chloride Test Reporting

In accordance with the latest consensus guidelines from the Cystic Fibrosis Foundation1, the laboratory will change the sweat chloride test reporting. Regardless of the age of the patient, the following interpretation will be provided effective August 24th 2017.

Sweat Chloride:
Less than or equal to 29 mmol/L: Cystic Fibrosis Unlikely
30-59 mmol/L: Intermediate
Greater than or equal to 60 mmol/L: Indicative of Cystic Fibrosis

1Farrell PM, White TB, Ren CL, Hempstead SE, Accurso F, Derichs N, Howenstine M, McColley SA, Rock M, Rosenfeld M, Sermet-Gaudelus I, Southern KW, Marshall BC, Sosnay PR. Diagnosis of Cystic Fibrosis: Consensus Guidelines from the Cystic Fibrosis Foundation. J Pediatr. 2017 Feb;181S:S4-S15.e1.PMID: 28129811

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