Which is the screening test for acromegaly?
The screening test for acromegaly is Serum IGF-1 levels. IGF-2 is responsible for prenatal growth. Oral glucose tolerance test with GH obtained at 0, 30 and 60 minutes. Normal people can supress growth hormone to <1g/L. Due to pulsatile nature of GH secretion, measurement of a single random value is not useful for diagnosis or exclusion of acromegaly.
Serum IGF-2
Oral glucose tolerance test
GH levels
Serum IGF-1
Disorders of pituitary gland