Hi I recently had testing do to a miscarriage. My protein c level was elevated at a value of 202. Also my anti thrombin 3 was elevated value 126. What if any underlying conditions will cause elevation. I have been told to follow up with a rheumatologist.

Autoimmune disorders. There are numerous autoimmune disorders that can contribute to increased risk of miscarriage. In addition there may be abnormal clotting disorders related to protein C & thrombin. A thorough evaluation with a specialist in autoimmune disorders is recommended to avoid a recurrence. Best of luck.