Serum marker of rickets is -
Acid phosphates
Alkaline phoshpatase
Decreased serum calcium
Urinary posphates
Ans. is 'b' i.e., Alkaline phosphataseo Amongst the given options, alkaline phosphatase is best because it is raised in all type of rickets.o The primary (Basic) investigations in a child of rickets are :?Serum calciumSerum phosphorusAlkaline phosphataseo If patient does not respond to calcium and Vit D therapy, secondry investigations are done :?Vit D levelSerum PTHUrinary calcium and phosphorus.