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?

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).