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Body Composition
Insulin-Like Growth Factor 1 (IGF-1)
Insulin-like growth factor 1 (IGF-1) is a protein hormone that circulates in the bloodstream and carries out growth signals. Most IGF-1 is made by the liver after stimulation from growth hormone released by the pituitary gland. Many tissues also make small amounts locally. At home blood testing is available in select states. See FAQs below

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