My wife has Giant Cell Arteritis and has recently being diagnosed with having a low haemoglobin count. The count has dropped as follows...112 in February, 102 in March and 87 in April. Upon attempting to source out what these numbers mean I cannot find any reference save and except to grams per deciliter or grams per 100 mililiters such as for women being 12-16 grams pers deciliter. Can you explain what the above numbers (112. 102, 87) mean and how do I convert such numbers to deciliter or milimeters. Further, she has had a gastoscopy and colonoscopy performed and each have been normal! If there is a slow bleed, where could it be or what other suggestions could be offered. I have also read that vasculitis could be the cause of lower haemoglobin levels. Thank you .