GHRP-6
Growth Hormone Releasing Peptide-6, Growth hormone-releasing hexapeptide, His-D-Trp-Ala-Trp-D-Phe-Lys-NH2
Determination of growth hormone-releasing hexapeptide by reversed-phase high-performance liquid chromatography with electrochemical detection.
Choi. S J SJ; Lee. H Y HY; Kim. S B SB; Kim. J H JH; Lee. S S SS; Yoo. S D SD; Lee. K C KC; Lee. H S HS
Key Findings
- A reversed‑phase CN column with 37% acetonitrile in phosphate buffer (pH 7.0) separates GHRP‑6 effectively.
- s two tryptophans and one histidine.",
Practical Outcomes
- For most biohackers, this study doesn’t change how you take GHRP‑6, but it provides a reliable way to measure blood levels if you have access to HPLC‑electrochemical equipment. It could be useful for labs or advanced DIY setups that want to verify dosing accuracy, though it isn’t necessary for typical self‑experimentation.
Summary
Researchers created a lab test that can accurately measure the amount of the peptide GHRP‑6 in blood using a special chromatography setup and an electrochemical sensor. The method works well for low concentrations (5‑100 ng/ml) and uses a simple sample cleanup step.
Abstract
A novel HPLC method with electrochemical detection is described for the determination of a growth-hormone-releasing hexapeptide (GHRP-6). HPLC conditions, such as the column, mobile phase, and oxidation potential, were optimized for sensitivity and selectivity of analysis. GHRP-6 was separated on a reversed-phase CN column with 37% acetonitrile in 100 mM phosphate buffer (pH 7.0) as the mobile phase. The optimum electrochemical oxidation signal was obtained at 0.85 V vs. Ag/AgCl in a glassy carbon working electrode due to two electroactive tryptophans and a histidine residue. Solid-phase extraction using octadecyl cartridges was optimized for sample cleanup of GHRP-6 from serum samples and the method was successfully applied over the concentration range of 5 to 100 ng/ml of analyte. reserved.
Study Information
pubmed
2001
2001-04-25T00:00:00.000Z
10.1016/s0378-4347(01)00030-5