Synonyms: Insulin growth factor-1, IGF-1 ; SM-C/IGF-1 ; Somatomedin-C, Sulfation Factor

NOTICE: This is a component of the Anti-Aging Panel and Human Growth Hormone Panel which may be more appealing than ordering this test alone.

Why It Is Done

Identify diseases and conditions caused by deficiencies and overproduction of growth hormone (GH). Evaluate pituitary function. Monitor the effectiveness of GH treatment

The insulin-like growth factor - 1 (IGF-1) test is an indirect measure of the average amount of growth hormone (GH) being produced by the body. IGF-1 and GH are peptide hormones, small proteins that are vital for normal bone and tissue growth and development. GH is produced by the pituitary and secreted into the bloodstream in pulses throughout the day and night with peaks that occur mostly during the night.

Test Overview

IGF-1 is produced, primarily in response to GH stimulation, by the liver and some is also produced by skeletal muscles. It mediates many of the actions of GH and so stimulates the growth of bones and other tissues and promotes the production of lean muscle mass.


No special preparation needed

7-9 days for results