How you prepare

An ANA test requires a sample of your blood. If your 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 might need to fast for a 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. 03, 2017
References
  1. Antinuclear antibodies (ANA). American College of Rheumatology. https://www.rheumatology.org/I-Am-A/Patient-Caregiver/Diseases-Conditions/Antinuclear-Antibodies-ANAhttp://www.rheumatology.org/Practice/Clinical/Patients/Diseases_And_Conditions/Antinuclear_Antibodies_%28ANA%29/. Accessed June 7, 2017.
  2. Bloch DB. Measurement and clinical significance of antinuclear antibodies. https://www.uptodate.com/contents/search. Accessed June 7, 2017.