<prompt> A 30 years female has lowr serum calcium and phosphate with elevated parathoramone. Diagnosis is -Vitamin D deficiencyPrimary hyperparathyroidismOsteoporosisPagets diseases  <response>: Ans. is a i.e., Vitamin D deficiency o Vitamine D deficiency will have: -Low calciumLow phosphateHigh alkaline phosphataseHigh parathormone level secondary hyperparathyroidismAbout other optionso In primary hyperparathyroidism : -High calciumLow phosphateHigh alkaline phosphataseHigh parathormone levelo In osteoporosis all these parameters are normal.o In Pagets disease calcium and phosphate levels are normal. Serum alkaline phosphatase is raised. 