Indications for Sweat Testing

Organ System

Indication

pulmonary and upper respiratory tract

chronic cough

recurrent or chronic pneumonia

wheezing that is persistent or refractory to usual therapy

hyperinflation that is persistent or refractory to usual therapy

tachypnea that is persistent or refractory to usual therapy

retractions that is persistent

atelectasis, especially if of right upper lobe

bronchiectasis

hemoptysis

infection with mucoid strains of Pseudomonas aeruginosa

nasal polyps

pansinusitis

digital clubbing

gastrointestinal

meconium ileus

meconium plug syndrome

prolonged neonatal jaundice

steatorrhea

rectal prolapse

mucoid impacted appendix

late intestinal obstruction

recurrent intussusception

cirrhosis

portal hypertension

recurrent pancreatitis

metabolic and other

positive family history of cystic fibrosis

failure to thrive

salty taste to skin

salt crystals on skin

salt-depletion syndrome

metabolic alkalosis

hypoprothrombinemia

vitamin A deficiency

azoospermia

absent vas deferens

scrotal calcification

hypoproteinemia

edema