Reasons your child may not be able to
have the test or why the results may not be helpful include:
- A baby's age. Babies younger than 4 weeks may
not produce enough sweat to give reliable test results and may have lower sweat
chloride levels than older babies and children. A minimum amount of sweat is
needed for accurate test results regardless of the child's age.
skin rash or sore on the area of the skin where the gauze pads are
- Acute or severe illness.
- Dehydration or heavy sweating.
- Normal fluctuations in sodium and chloride during
- A decrease in the hormone aldosterone.
medicines, such as fludrocortisone.