Sorry for another post on iron but I am wondering if anyone knows how long it takes to raise ferretin levels? I am at 23 and am able to tolerate 75mg of iron glycinate if I take it with 8000 mg of Vitamin C. I am wondering how long before I retest and when to expect a difference? One month, two? How long til it gets up to 70 or optimal? Should I consider Iron injections IM and if so, how often should I do this? I want to get the nutritional what if possibilities optimized and out of the way to see what else is underlying (cortisol, progesterone, heavy metals, dental issues, etc) There is just so much to work on....ugh. thanks again.