I have had Lupus for 15 years and never had a positive ANA. I have Lupus Kidney Disease, Pancreatitis, Gastroparisis, etc
SLE can go into remission, which means medication and your life style for now is treating you well. However a flare up can happen at any time. Which depends on each individual regarding lifestyle.
Maybe it has to do with the type of blood test you had? Read this article, itโs quite interesting.
https://www.healthline.com/health/lupus/seroneg...
Lupus can be control but there is no cure for Lupus.