The product sold by clinics is a synthetic 15-amino-acid peptide manufactured by "solid-phase synthesis", administered under the skin, into the muscle or a joint, or intravenously, often at higher doses for weeks
Long-term clinical and MRI results of matrix-assisted autologous chondrocyte implantation for articular cartilage defects of the knee
Ramirez-Carrozzi VR, Braas D, Bhatt DM, Cheng CS, Hong C, Doty KR et al
The urochrome from this process ends up in the urine and gives it its yellow color
The relevant quality differentiator is the same as every other source: whether the vendor can provide lot-level COA documentation confirming sterility, benzyl alcohol concentration, and endotoxin levels for the specific product currently in distribution