IGFBP-3 (IGF Binding Protein 3)

Specialist

also

What it isThe dominant carrier protein for IGF-1 in circulation, regulating how much IGF-1 is free to act on tissues.

DoesBuffers IGF-1 availability and extends its half-life.

GoodA mid-range IGFBP-3 with appropriate IGF-1 signals balanced growth hormone axis.

BadPatterns of IGFBP-3 versus IGF-1 help clinicians evaluate growth hormone disorders.

Standard
2–6 mg/L.
Optimal
3.5–5.5 mg/L (narrow target)
Modifiers
Tracks IGF-1 broadly; declines with age.

How to optimize

Lifestyle
Same as IGF-1.
Diet
Same as IGF-1.
Supplements
Same as IGF-1.
Peptides
CJC-1295, ipamorelin, sermorelin, tesamorelin.
Drugs