No changes necessary. If possible, eat this diet for 30 days before the test. Don't eat licorice for at least 2 weeks before the test. You may be asked not to take this medication before the test. Roll up sleeve only.
Discomfort disappears when the test is finished.
Equipment used Needles, syringes and heparinized collecting tubes. Sterile, disposable equipment prevents contamination or spread of infection. There is no risk of becoming infected with the hepatitis virus, AIDS virus or any other infecting germ. The first sample is collected. Another sample is drawn 4 hours later.