Deficiency of which vitamin causes excretion of xantheurenic acid in urine?

NEET PG
#1

Deficiency of which vitamin causes
excretion of xantheurenic acid in urine ?
a) Folic acid
b) Pyridoxin
c) Niacin
d) Vitamin B12
Correct Answer - B
Ans. is ‘b’ i.e., Pyridoxin