Prior to starting statins, my iron levels were all normal. Since taking statins, for example, my hemoglobin has ranged from 10.6 to 12.9. I have passed all the tests, ie colonoscopy, beriatric test of upper GI, probe down to the stomach, numerous stool samples, test for blood cancers, etc.f you iron levels are notmal I would check your Folic acid and vitamin B 12 level as a deficiency in those can cause what we call pernicious anemia. If these come back normal we need to look at other causes.