CALCIUM ( Ca ):
About
half of calcium present in blood is in ionized from and the rest, in unionized
from. Some of unionized calcium is bound to protein, and a small amount is
bound to citrate.
Calcium
taken in the diet is in the form of calcium phosphate or carbonate.
Sources:
- Milk , eggs, fish, and vegetables,
- Cereals (wheat and rice) contain
only small amounts of calcium.
Daily requirement:
- Adult : 0.5 gms
- Pregnancy : 1.5 gms
- Children: 1.0 gm .Serum level 2.1-2.6mmol/L.
