Like many of you with APS I am low in vitamin D3 and Vitamin B-12 as well as homocysteine. I am also suspicious of thyroid deficiency and am going to ask my new hemotologist if he will test me extensively. I will ask him to test TSH, FT4, FT3, TT4, Thyroid Peroxidase Antibodies,Thyroglobulin Antibodies. Am I missing anything else that I should be asking him to test? Also, I am currently on prednisone for a Lupus flare and wondered if that will affect the testing? Thanks for any input.