If your blood sample is being used only for an ANA test, you can eat and drink normally before the test. If your blood sample will be used for additional tests, you may need to fast for an amount of time before the test. Your doctor will give you instructions.
Certain drugs affect the accuracy of the test, so bring your doctor a list of the medications you take.
Aug. 05, 2014
- Antinuclear antibodies (ANA). American College of Rheumatology. http://www.rheumatology.org/Practice/Clinical/Patients/Diseases_And_Conditions/Antinuclear_Antibodies_%28ANA%29/. Accessed June 18, 2014.
- Schur PH. Measurement and clinical significance of antinuclear antibodies. http://www.uptodate.com/home. Accessed June 18, 2014.