Growth Factors Research Peptides

IGF-1 and growth factor research peptides

Growth factors are signalling proteins studied for cell proliferation and differentiation. This category includes IGF-1 LR3 (receptor grade), an extended-half-life IGF-1 analogue with reduced binding-protein affinity; IGF-1 DES, a truncated, fast-acting variant; IGF-2 LR3; and Follistatin 344, studied as a myostatin-binding protein.

It also lists the gonadotropins HCG and HMG, used as reference materials in reproductive endocrinology research. See the research hub for compound profiles and citations.

Buying growth factor research peptides

Each product lists its HPLC purity specification (≥98% or higher). Where a CertikLabs certificate of analysis (COA) is available for a strength and lot, it is linked from that product page with HPLC purity, LC-MS identity, and concentration results. Confirm the exact analogue, sequence or protein form because closely named growth factors can differ materially in structure and research behavior. For an evidence-based purchase review, use the research peptide supplier checklist, learn how peptide lab verification works, and confirm that any available report matches the ordered product, strength and lot. All compounds are supplied lyophilized, strictly for in-vitro laboratory research. They are not drugs, supplements or cosmetics and are not for human or veterinary use — see Research Use Only.

Frequently asked questions

What is the difference between IGF-1 LR3 and IGF-1 DES?

IGF-1 LR3 has an extended sequence that reduces binding-protein affinity and lengthens its half-life; IGF-1 DES lacks the first three amino acids and acts more quickly and locally in research models.