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Diagnosis of CAH: 1. 21 alpha hydroxylase deficiency ● Aldo | Biochemistry

Diagnosis of CAH:

1. 21 alpha hydroxylase deficiency

● Aldosterone low
Iead to hyponatremia , hyperkalemia and decrease excretion of H ( metabolic acidosis ).
● PRA high
● Cortisol low
● Androgen hormones high lead to ambigous genitalia.

2. 17- hydroxylase deficiency

● Aldosterone high
Iead to hypernatremia, hypertension , hypokalemia and increas excretion of H ( metabolic alkalosis).
● Cortisol low
● Androgen hormones low

3. 11-β-Hydroxylase Deficiency
● Aldosterone low compensated by DOC lead to
hypokalemia, hypernatremia or nornal and hypertension .
● PRA low( due to retention of water )
● Cortisol low .
● Androgen hormones high lead to ambigous genitalia.