HGH 191AA

HGH 191AA is recombinant human growth hormone consisting of the full 191 amino acid sequence identical to pituitary-derived somatropin. It is typically expressed in E. coli or CHO cell systems using recombinant DNA technology and verified for sequence integrity and biological activity.

As a research compound, HGH 191AA is used in studies examining the somatotropic axis, cell proliferation, protein synthesis, lipolysis, and IGF-1 production. It binds to the GH receptor (GHR) to activate the JAK2-STAT5 signaling pathway, triggering downstream anabolic and metabolic effects including hepatic IGF-1 production.

• Somatotropic axis and JAK2-STAT5 signaling research
• IGF-1 production and downstream signaling studies
• Protein synthesis, nitrogen retention, and anabolic models
• Lipolysis and fat metabolism research
• GH receptor (GHR) pharmacology and binding kinetics
• Comparison of recombinant HGH with secretagogue-stimulated GH

Dose levels referenced by the MVLabs peptide calculator, shown for research reference only:

1 IU ≈ 0.33 mg. Subcutaneous in the abdomen. Rotate sites.

Research reference only — not dosing guidance for human use. Use the calculator for other vials or volumes.

Supplied as a lyophilized powder. Store at 2–8 °C on receipt; protect from heat, light and moisture, and avoid excessive agitation. If reconstitution is required for laboratory work, use sterile technique — bacteriostatic water, or 0.6% acetic acid for low-solubility peptides. Protocols vary by research application.