Is there a clinical / lab definition of seronegative APS or is it a subjective diagnosis? I had an arterial clot that took out kidney around June 2016, followed by a positive LA test in July 16. Doctor at Kaiser diagnosed as APS. They also did electrocardiograph to rule out a fibrillation, etc and heart was healty/normal. Cholesteral and all other clot drivers were fine (I exercise and eat healthy). I then had two follow up blood tests in September and December, both negative. I was in Minnesota this week, so I went to Mayo hematology Dr. They did the tests again. Dr Aneel Ashrani cited the 2006 Sydney criteria and said I do not have APS and possibly had some other incident such as trauma that caused clot, but I can think of no such incident. He has said maybe I should move to daily aspirin instead of warfarin. (To be fair, he is going to re-review electrocardiograph and scans before concluding. So... three questions:
1) Again, what is the clinical criteria for seronegative APS?
2) Are the updates to the 2006 criteria?
E3) When some of you have suggested " more tests" when a person is seronegative... what tests would these be? (I had the 3 blood tests that Mary suggested)