Insulin-like Growth Factor-binding Protein 3 (IGFBP-3)
Approximately 95% of IGF-1 and IGF-II are bound to IGFBP-3, which makes this protein the major carrier of the insulin-like growth factors in circulation. The function of the binding protein is to extend the half-life of the growth factors in the circulation.
Insulin-like growth factors (IGF-1, IGF-II) are a family of peptides involved in the regulation of cell growth, the actions of which are mediated by binding to the insulin-like growth factor binding proteins. Six binding proteins (IGFBP-1 through IGFBP-6) have been described. IGFBP-3 is the most predominant of these. Approximately 95% of IGF-1 and IGF-II are bound to IGFBP-3, which makes this protein the major carrier of the insulin-like growth factors in circulation. The function of the binding protein is to extend the half-life of the growth factors in the circulation.
NOTE: If you are taking biotin, please stop it 72 hours before the blood draw since it may interfere with hormone blood tests.
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HOW DOES DISCOUNTEDLABS.COM WORK?
Go to the "Find a Location" page to find the closest lab location. No need to make an appointment since walk-ins are welcomed. Once you have identified your closest location, go to step 2.NOTE: We serve all states in the U.S. except New York, New Jersey, and Rhode Island. Residents of those states need a written lab order from an in-state provider. Individuals cannot obtain a blood draw in neighboring states.
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You will receive an order confirmation and instructions email on how to download your lab request.
Print lab request form that you downloaded.
Take that form to the closest Quest Diagnostics location with a picture ID. Get your blood drawn.
You will receive an email when the results are ready for you to download.Note: You cannot place an order under someone else's profile. The profile person's name will appear on the lab order form.
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