This is an important test used to measure the level of IGF-BP3 in the blood.

Venous blood
1 tests included
5 days turnaround



About Igf-bp3

What is insulin-like growth factor-binding protein 3?

Insulin-like growth factor-binding protein 3 (IGF-BP3) acts as a transport protein to carry insulin-like growth factor 1 (IGF-1) and insulin-like growth factor 2 (IGF-2) in the blood. This binding to IGFs increases their stability and allows IGF-B3 to regulate IGF activity. IGF-1 is a protein produced by the liver in response to growth hormone, a hormone produced by the pituitary gland. It is responsible for mediating many of the effects of growth hormone in regulating cell proliferation and growth.

In childhood, high levels of IGF-1 are necessary to sustain growth and development. In adults, the level of IGF-1 is typically significantly reduced comparatively. IGF-BP3 also follows this pattern, reducing in adulthood. IGF-1 deficiency in childhood is associated with growth problems such as dwarfism. Elevated levels in adults are associated with certain types of cancer and ageing.

Why take the test?

This test measures the level of IGF-BP3 in the blood. It is typically used to investigate pituitary gland function and production of growth hormone.


What's tested


How it works



Purchase your Kit

Just order a test online and get your kit delivered right to your door unless you are ordering a COVID-19 Fit to Fly test where you will be given appointment options to attend our clinics across the United Kingdom for a nose and throat swab PCR test at the checkout stage.



Take your test and post

Follow our simple instructions to take your sample and post back the enclosed prepaid envelope to our accredited lab for processing. We also offer home or workplace visits by a qualified nurse. For COVID-19 Fit to Fly tests you must attend one of our partner clinics for our trained collection officers to take your sample. You will then have the results emailed to you.



Get results directly to your dashboard

You will receive an email notification from our medical team when your results are available on your secure personalised health dashboard.