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                        $1 today • Pay Balance After ResultsIGF-1 (Insulin-like Growth Factor 1)$77
Learn MoreInsulin-like Growth Factor 1, also known as IGF-1, is used as a biomarker for blood levels of human growth hormone. It is a hormone produced by the liver and other tissues which affects growth-promoting activities and glucose metabolism. The blood level of IGF-1 appears to fluctuate over 24 hours and is found to be related to growth hormone secretion.