Deficient      : <10<br>High Risk for Developing Bone Disease<br><br>Insufficient   : 10-29<br>Vitamin D Concentration which  normalize Parathyroid hormone  concentration<br><br>Sufficient     : 30-50<br>Optimal concentration for  maximal  health benefit<br><br>Potential Intoxication    : >50<br>High Risk for Toxic Effects