KROK 1 2012 – Question 170 · KROK (Medicine) · Biological Chemistry
A 4 year old child with hereditary renal lesion has signs of rickets, vitamin D concentration in blood is normal. What is the most probable cause of rickets development?
- A. Hypofunction of parathyroid glands
- B. Impaired synthesis of calcitriol
- C. Increased excretion of calcium
- D. Lack of calcium in food
- E. Hyperfunction of parathyroid glands
Hint
Rickets with a normal vitamin D level in the blood suggests the fault lies after the vitamin is present in the circulation; ask where it becomes active and which organ is damaged here.
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