CFTR and CFTR-related metabolic syndrome/CF screen positive, inconclusive diagnosis: Patients with a positive NBS and a sweat test result from < 29 mmol/L or 30 to 59 mmol/L and inconclusive genetic testing are categorized as CFTR-related metabolic syndrome (CRMS), and CF screen-positive, inconclusive diagnosis (CFSPID) (considered to be the same) [27].