This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Biochemistry
Hay's sulpher test is used to detect which of the following ? 
Select and explain. 
A. Bile salts in urine, B. Reducing sugar in urine, C. Ketone bodies in urine, D. Urobilinogen in urine
A: Bile salts in urine
Answer: A: Bile salts in urine 
Explanation: Ans. is 'a' i.e., Bile salts in urineTestsUsed forRothera's test (nitroprusside test) Ketone bodies in urine :- acetone and acetocetate Gerhardt's test (ferric chloride test) Ketone bodies in urine :- acetoacetate. Benedict's test Reducing sugars in urine Fehling's test Reducing sugars in urine Hay's sulpher test Bile salts in urineFouchet's (borium sulphate test) Bile pigment : bilirubin Gmelin's (nitric acid) test Bile pigment : bilirubin Vanden Bergh test Bile pigment : bilirubin Ehrlich's test Bilinogens (stercobilinogen, urobilinogen) Schlesinger's test Bilins (stercobilin, urobilin). Ehrlich's aldehyde test Porphobilinogen and urobilinogen in urine