A nurse is teaching the guardian of a child who is suspected of having cystic fibrosis and is scheduled for a sweat chloride test. Which of the following statements should the nurse include?

"Your child will need to receive sedation to minimize pain during the test."

“Two separate samples will be collected to ensure accuracy of the test results."

"Your child should avoid eating and drinking 6 hours prior to the test."

"It will take approximately 3 hours to complete the test."