Question: Why do ANA test results fluctuate between positive and negative over time?
It can be frustrating and confusing when ANA test results vary. While about 98% of people with lupus have positive ANA tests, these levels can change over time. This variation may occur due to:
• Changes in disease activity
• Current Show Full Answer
Question: Why do ANA test results fluctuate between positive and negative over time?
It can be frustrating and confusing when ANA test results vary. While about 98% of people with lupus have positive ANA tests, these levels can change over time. This variation may occur due to:
• Changes in disease activity
• Current medications
• Timing of when tests are taken
• Lab testing variations If you have fluctuating ANA results but symptoms consistent with lupus, your doctor may order additional tests to confirm your diagnosis:
• Additional autoantibody tests
• Complete blood count
• Complement levels
• Inflammation markers
• Kidney and liver function tests
• Urinalysis
Even with a negative ANA, you may still receive a lupus diagnosis based on your symptoms and other test results. Stay in close communication with your healthcare team about your symptoms and test results to ensure proper monitoring and treatment.
July 16, 2025