What is considered 'normal' for homocysteine levels? I have had 2 miscarriages this year and I had my levels checked Feb 2005 (for unrelated family history of cardiac problems) and it was 12.8 which apparantley is on the high side of normal. I have only just done some research on homocysteine today because of something someone mentioned over lunch today and I am wondering if 12.8 could be part of the reason why I miscarried. Do you ladies think I should get my levels checked again by my GP?