Since transferrin is the main transport protein for iron, levels of transferrin can also be used to calculate TIBC. Each mole of transferrin, with an approximate molecular weight of 79.5 kDa is capable of binding to two moles of iron, molecular weight of 55.8 kDa.
The frequency of having bowel movements varies based on your age. Now let's take a closer look. Even people who donât go to the bathroom every day are not necessarily constipated. It is normal for adults to have a bowel movement 2-3 times a day or once every three days. If, however, you pass over three days without a movement, the stool may harden and become hard to push out.
Some sources define constipation as having three or fewer bowel movements per week, but that is a generalization. If you normally have 2 or 3 bowel movements per day, 3 per week would indicate constipation. If three movements per week is normal for you, though, then there is no reason for concern. Constipation becomes more severe the longer it lasts.