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Diagnosing Acromegaly

Diagnosing acromegaly

To find out if you have acromegaly, your doctor may perform one or more tests. These may include:

  • A blood test for insulin-like growth factor I (IGF-I) levels

This is the first test for acromegaly. High IGF-I levels are almost always due to acromegaly.

  • A blood test for growth hormone (GH) levels

A series of blood samples are taken over several hours. This test requires avoiding food overnight, skipping breakfast, and drinking a glucose (sugar) solution in the morning.

  • A magnetic resonance imaging (MRI) scan of the head

If there is reason to believe that a benign tumor in the pituitary gland is causing the high IGF-I and GH levels, this test will help your doctor see and measure the tumor.

"When I was first diagnosed, I didn’t have any support.

I had never heard of acromegaly before then…I didn’t know what was going to happen."

–Jenifer, a patient with acromegaly