Synonyms: Somatomedin C
Related tests: GH

Clinical significanceClinical indicationsSample typePreparation

Clinical significance
IGF-I is a peptide produced by the liver when stimulated by growth hormone (GH), and it has an insulin-like action. Measuring IGF-I is useful for assessing the severity of acromegaly and the response to its treatment.

Clinical indications
Acromegaly

Sample type
The patient must have a blood sample taken.

Preparation
You must fast for at least 8 hours; a small amount of water is allowed.