Growth Hormone Research Peptides

GHRH analogues and ghrelin-receptor agonists used in growth hormone secretagogue research: CJC-1295 without DAC (Mod GRF 1-29), Ipamorelin and Tesamorelin. Every product page shows its certificate of analysis, with HPLC purity of 99% or higher and identity confirmed by mass spectrometry.

Growth hormone secretagogue peptides for UK research

This collection covers the two main classes of peptide used in growth hormone secretagogue research: GHRH analogues, which act on the growth-hormone-releasing hormone receptor, and ghrelin-receptor agonists. All are supplied as lyophilised powder in sealed, batch-labelled glass vials.

  • CJC-1295 (no DAC) (2mg): also known as Mod GRF 1-29, a modified 29-amino-acid GHRH analogue without the drug affinity complex.
  • Ipamorelin (5mg): a pentapeptide ghrelin-receptor agonist studied for its receptor selectivity.
  • Tesamorelin (5mg): a stabilised GHRH analogue used in receptor and signalling research.

Who these peptides are for

These products are for in-vitro and laboratory research by qualified researchers only. They are not medicines and are not for human or veterinary use.

Why researchers choose Absolute Peptides

  • Certificate on every product page showing HPLC purity and mass spec identity for the current batch.
  • 99%+ purity across our current stock.
  • UK stocked with tracked UK delivery, free over £100.
  • Mix and match bulk savings: 10% off 3 vials, 15% off 5 and 20% off 10.

Frequently asked questions

What does "no DAC" mean?

DAC stands for drug affinity complex, a chemical addition that extends a peptide's half-life. CJC-1295 without DAC is the unmodified Mod GRF 1-29 sequence.

What is the difference between a GHRH analogue and a ghrelin-receptor agonist?

They act on different receptors. GHRH analogues such as CJC-1295 and Tesamorelin target the GHRH receptor, while Ipamorelin targets the ghrelin receptor (GHS-R1a).

How should these peptides be stored?

Keep lyophilised vials at 2–8°C, or at −20°C for long-term storage, away from light and moisture.

Browse our full range of UK research peptides, or see tissue-repair research peptides and mitochondrial and longevity research.

For laboratory research use only. Not for human or veterinary use.