What happens after I get my results?

You'll receive detailed doctor notes in simple language explaining what your IGFBP-3 levels mean for growth and hormone function. These notes include personalized recommendations such as when to follow up with an endocrinologist, nutritional support, or whether additional testing is needed. You'll also get the standard lab report and can track your levels over time using our trends feature, which is especially helpful for monitoring growth patterns or hormone therapy effectiveness.

Who should consider getting this test?

This test is important for children or adolescents with delayed growth, short stature compared to peers, or suspected growth hormone deficiency. Adults may need this test if they have symptoms of growth hormone disorders, pituitary gland issues, or are undergoing growth hormone therapy monitoring. It's also useful for anyone whose doctor wants to evaluate IGF-1 system function or diagnose acromegaly.

What symptoms indicate I may need this test?

In children, signs include growing much slower than peers, significantly short stature for age, delayed puberty, or looking much younger than their actual age. In adults, symptoms might include unexplained fatigue, reduced muscle mass, increased body fat, or signs of excessive growth hormone like enlarged hands or feet. If you notice these patterns, this test can help identify underlying hormone issues.

What is IGFBP-3 and why does it matter?

IGFBP-3 is a protein that carries IGF-1 (a growth-promoting hormone) through your bloodstream and helps regulate its activity. It's produced in response to growth hormone from the pituitary gland, so measuring IGFBP-3 helps doctors understand if growth hormone production is normal. Unlike growth hormone, which fluctuates throughout the day, IGFBP-3 levels remain stable, making it a reliable marker for assessing growth hormone function.

What does low IGFBP-3 mean?

Low IGFBP-3 levels typically suggest that your body isn't producing enough growth hormone. In children, this can explain slow growth, short stature, or delayed development. In adults, low levels may indicate growth hormone deficiency, which can cause fatigue, reduced muscle mass, and changes in body composition. Your doctor may recommend additional testing or growth hormone therapy depending on your symptoms.

What does high IGFBP-3 mean?

High IGFBP-3 levels may indicate excess growth hormone production, which can occur with conditions like acromegaly or gigantism. In children, this might lead to unusually rapid growth, while in adults it can cause enlarged facial features, hands, and feet. Elevated levels require follow-up testing and evaluation by an endocrinologist to determine the cause and appropriate treatment.

How often should I retest IGFBP-3 levels?

If you're monitoring growth in a child with suspected deficiency, retesting every 6-12 months helps track development and response to any interventions. For adults on growth hormone therapy, testing every 3-6 months helps ensure treatment is working properly. If initial results are normal but symptoms persist, your doctor may suggest retesting in 6-12 months or ordering additional hormone tests for a complete picture.