This profile is intended to assess the bodys stores of vitamin D, vitamin B12 and folic acid and identify any deficiencies. For strong bones, a healthy neurological system, and the production of healthy red blood cells you need vitamin D, vitamin B12, and folic acid respectively. When experiencing indications of vitamin deficiency, such as pale skin, weakness, soreness in the joints, weak muscles, and palpitations this profile is advised. It is also suggested as a standard investigative procedure.