Kevin is a 44 year old plumber who is suffering with a 2 month history of reflux despite a trial of improving lifestyle measures, including smoking cessation and reducing alcohol intake. Omeprazole has given some benefit. He has had a recent chest infection requiring Amoxicillin but is on no other regular medications. You suggest a test for helicobacter pylori and he is keen to proceed with this.
Which one of the following statements is correct with regards to having a carbon-13 urea breath test?