Every lot is released against an independent third-party full QC panel HPLC purity, LC-MS identity, net peptide content, heavy metals (ICP-MS), sterility, and endotoxin (USP ) with a lot-specific COA matched to the lot number printed on the vial
Its almost a question of where are they not ? In fact, these receptors are now known to be abundant throughout the body
This activity of carnitine can by likened to the use of sunscreen reducing downstream effects of UV (pain, redness, edema, exfoliation, melanin production, collagen damage) by physically limiting the cellular damage/stress from UV, not by the pharmacological targeting of cytokines, receptors, etc
Weiss JF, Srinivasan V, Kumar KS, Landauer MR (1992) Radioprotection by metals: selenium