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What is A patient presents with low serum calcium, high phosphorus and etevated PTH. Which of the following investigations is least contributory to establish a diagnosis - and explain in detail?
Ans is option 1.. Vit D levels Vit d deficiency is associated with hypophosphatemia and not hyperphosphatemia Renal failure, pseudohypoparathyroidism and increased urinary myoglobin may all be associated with combination of hypocalcemia, hyperphosphatemia and elevated PTH levels Ref Harrison 19/e p2482