<prompt> A patient Shweta with raised serum alkaline phosphatase and raised parathormone level along with low calcium and low phosphate level is likely to have -Primary hyperparathyroidismPagets diseaseOsteoporosisVitamin D deficiency  <response>: Vitamin D deficiency will have : -Low calciumLow phosphateHigh alkaline phosphataseHigh parathormone level secondary hyperparathyroidismAbout other optionsIn primary hyperparathyroidism : -High calciumLow phosphateHigh alkaline phosphataseHigh parathormone levelIn osteoporosis all these parameters are normal.In Pagets disease, calcium and phosphate levels are normal. Serum alkaline phosphatase is raised. 