All inclusive. No extra lab fees. No extra testing fees.More Info
Frequently Asked Questions
When will I receive my lab order?
You'll receive it via email within 60 seconds of your order unless it requires additional processing (only very complex orders do).
When will my results be available?
Many general wellness test results are usually available online within 2-3 business days. However, some tests will require additional time for processing. You'll immediately receive an email notification when your results are available.
Do you notify my insurance company?
We do not share your results with your physician, insurance company, or any other third party.
Insulin-Like Growth Factor I (IGF-I, LC/MS) - (QUEST DIAGNOSTICS)
IGF-1, also known as somatomedin-C, is a polypeptide hormone produced by the liver and other tissues in response to growth hormone release by the pituitary gland. IGF-1 effects growth promoting activity and glucose metabolism (insulin-like activity) in most human tissues. It is carried in blood bound to a carrier protein which prolongs its half-life; therefore making serum levels more constant than growth hormone while correlating with "average" circulating levels of growth hormone. In short, IGF-1 is a surrogate marker of growth hormone levels and activity.
Measuring IGF-I is useful in several growth-related disorders. Dwarfism caused by deficiency of growth hormone (hypopituitarism) results in decreased serum levels of IGF-I, while acromegaly (growth hormone excess) results in elevated levels of IGF-I. IGF-I measurements are also helpful in assessing nutritional status; levels are reduced in undernutrition and restored with a proper diet.
A significant deviation from the normal range may require further evaluation by your physician.
Alternative Name(s): Somatomedin-C, Insulin-Like Growth Factor, IGF-1, SM-C/IGF-1
Insulin-Like Growth Factor I (IGF-I).
No fasting required.
Estimated turnaround for results is 3 business days. If confirmation testing is required, the estimated time may be extended.
IGF-1, also known as somatomedin-C, is a polypeptide hormone produced by the liver and other tissues in response to growth hormone release by the pituitary gland. IGF-1 effects growth promoting activity and glucose metabolism (insulin-like activity) in most human tissues. It is carried in blood bound to a carrier protein which prolongs its half-life; therefore making serum levels more constant than growth hormone while correlating with "average" circulating levels of growth hormone. In short, IGF-1 is a surrogate marker of growth hormone levels and activity.
A significant deviation from the normal range may require further evaluation by your physician.
This test may exhibit interference when sample is collected from a person who is consuming a supplement with a high dose of biotin (also termed as vitamin B7 or B8, vitamin H or coenzyme R). It is recommended to stop biotin consumption at least 72 hours prior to the collection of specimen. Estimated turnaround for results is 3 business days. If confirmation testing is required, the estimated time may be extended.
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