I had 2 pregnancy loss at 17 weeks and 26 weeks, so I did "anti cardio G" and "lupus anticoagulant antibody". These test were negative but "antithrombin" was 69/1 % (the normal range mentioned in the sheet is 80-120%). Does anybody know what it means? I am 13 weeks pregnant now and 2 weeks later I will go to the doctor for my checkup. I have diabetes type 1 and hypothyroidism too.