Scientific Programme & Abstracts from the International Meeting in Pediatric Endocrinology (IMPE)

impe0096p13 | Adrenals and HPA Axis | IMPE2023

Cut-off point of basal 17-hydroxyprogesterone levels for the performance of ACTH stimulation testing in patients with suspected non-classical congenital adrenal hyperplasia

del Pilar Montilla María , Cristina Martínez Rueda Silvia , Alfonso Builes Carlos , Agredo Delgado Valentina , Abad Veronica

Background: Non-classical congenital adrenal hyperplasia (NC-CAH) by variants in the CYP21A2 gene, cause a deficiency in the enzyme 21α-Hydroxylase and accumulation of precursors proximal to the blockage (progesterone and 17-hydroxyprogesterone- 17OHP), and androgen production. 17-OHP levels below 2ng/dl rule out the alteration, while levels above 10ng/dl confirm the diagnosis. Levels between 2-10 ng/dl require ACTH stimulation testing. However,...