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: Pediatrics
A 5-yr old boy presents with pubic hair development. He is tall and has increased pigmentation of his genitalia and phallic enlargement. Blood pressure is 130/90 mm 14g. Measurement of which of the following hormones would be most likely to be diagnostic? 
Select and explain. 
A. Increase 17 beta hydroxyl progesterone, B. Increase coisol, C. Increase aldosterone, D. Increase 11 deoxycoisol
D: Increase 11 deoxycoisol
Answer: D: Increase 11 deoxycoisol 
Explanation: Ans is 'd' i.e., Increase 11 deoxycoisol o Presence of Precocious pubey in a male child and hypeension (BP of 130/80 in a 5 year old child is considered hypeension) suggests a diagnosis of congenital adrenal Hyperplasia due to 11-13 Hydroxylase deficiency. o levels and excretion of 11 deoxycoisol is increased(see flow cha of previous explanations).