At my surgery they like to have your levels above 12, so I was put on low dose iron tablets when my hb dropped to 11.2. Have been taking them for a month or so now and had bloods done again last week so will be interested to see if my levels have gone up when I see midwife on monday. They did say it wasnt too low, but they like to keep it in a healthy range so its easier to get back up and regulate, rather than waiting for it to drop too low and having to take tablets for months to get it back up. x