Testing, Diagnosing, and
Monitoring Acromegaly

Once acromegaly is suspected, there are simple tests your doctor can order to diagnose acromegaly.

Lab Tests for Diagnosing and Monitoring Acromegaly
  Name of Test How It Is Performed What It Tells Your Doctor
diagnosingImg Random GH Testing Simple blood test GH is high in people with acromegaly

Because GH levels change throughout the day, your doctor may take several samples at different times and average the results
diagnosingImg Oral glucose tolerance test Following an overnight fast, you are given a high-sugar drink

A simple blood test is done after to check your GH level
The high amount of sugar should lower the level of growth hormone

With acromegaly, your GH level will not be affected by the sugar, it will stay elevated
diagnosingImg Serum IGF-1 Simple blood test IGF-1 is above normal in people with acromegaly

GH, growth hormone; IGF-1, insulin-like growth factor-1.

Based on the results of your hormone testing, an imaging test, such as magnetic resonance imaging (MRI) or computed tomography (CT) scan may be used to find a pituitary tumor and pinpoint its exact location and size.

Your doctor may order additional tests to check your overall health, including:


Vision test

Thyroid ultrasound

Thyroid ultrasound

Ask your doctor what tests are needed for your condition.

Talk to your doctor about your GH and IGF-1 levels and what your goal numbers are.