Hexarelin is a synthetic hexapeptide, and confirming a lot's sequence and purity before use is standard practice for any GHRP-family research tool.
Reversed-phase HPLC
HPLC separates the intended hexapeptide from truncated or side-reaction byproducts that can arise during synthesis, with the resulting purity figure read per understanding HPLC purity.
Mass spectrometry for identity
Mass spectrometry confirms the molecule's mass matches hexarelin's expected value rather than a structurally similar GHRP-family peptide, closing a gap HPLC retention time alone cannot — see HPLC vs. mass spectrometry.
Why potency makes verification important
Because hexarelin is reported as substantially more potent at GH-release stimulation than more selective secretagogues like ipamorelin (see its mechanism of action), an unverified or degraded lot introduces more uncertainty into potency-sensitive assay design than it would for a milder compound.
Documentation to expect
A lot-specific certificate of analysis with HPLC purity and mass-spec identity confirmation — see how to read a CoA.
Product page: Hexarelin research vials.
Research Use Only. Supplied strictly for laboratory research and development — not for human or veterinary use, consumption, or any therapeutic or diagnostic purpose. This article is research education, not usage guidance.