Stack 04

Somatotropic Protocol

Two independent inputs to the growth axis, examined alongside tissue remodelling.

Research domain: Growth
Components: 03
Certification: Per component
Supply: Never pre-mixed

Overview

What this grouping is

The somatotropic axis has two distinct pharmacological entry points, and the literature treats them as complementary rather than interchangeable. CJC-1295 engages the GHRH receptor; Ipamorelin engages GHS-R1a through a separate G-protein route. Supplied together, they allow the additive question to be asked directly.

TB-500 is included because growth-axis studies frequently carry a tissue-remodelling endpoint, and actin dynamics are the most direct way to measure it. The grouping is therefore two inputs and one readout.

Purpose

To make both routes into the somatotropic axis available in one documented set, with a cytoskeletal readout for downstream remodelling.

Included peptides

03 independently certified vials

Each component carries its own batch number and its own certificate of analysis. A stack result is only traceable if every batch identifier is recorded.

01
CJC-1295 / Ipamorelin
5 mg + 5 mg / vial
Dual somatotropic input — GHRH receptor and GHS-R1a in one preparation.
Assayed purity99.33%
98%Spec ≥ 99%100%
02
BPC-157 + TB-500
5 mg + 5 mg / vial
Cytoskeletal readout — actin dynamics as the remodelling endpoint.
Assayed purity99.82%
98%Spec ≥ 99%100%
03
NAD+
500 mg / vial
Metabolic context — mitochondrial capacity as a covariate of growth signalling.
Assayed purity99.17%
98%Spec ≥ 99%100%

Scientific summary

CJC-1295 is characterised as a GHRH analogue modified at four positions to resist dipeptidyl peptidase cleavage, engaging the GHRH receptor on somatotrophs and raising cyclic AMP to increase secretory pulse amplitude. Ipamorelin is a selective pentapeptide agonist at GHS-R1a acting through a Gq-coupled route, notable in the literature for the absence of the cortisol and prolactin cross-reactivity reported for earlier secretagogues. TB-500 supplies the remodelling readout through G-actin sequestration and the resulting shift in polymerisation equilibrium.

Ideal research use

01Somatotropic axis and pulsatility characterisation

02Receptor selectivity profiling across GHRH-R and GHS-R1a

03Neuroendocrine model development

04Musculoskeletal remodelling studies with an endocrine input

Protocol information

How the set is handled

A description of laboratory practice as the published record reports it. Nothing here is administration guidance, and none of it should be read as such.

01PulsatilityThe axis is pulsatile by nature, and published designs are built around that. Sampling schedules matter more here than in receptor-level work, because a single time point can miss the effect entirely.
02ReconstitutionThe CJC-1295 / Ipamorelin preparation and TB-500 both reconstitute conventionally in bacteriostatic water. NAD+ requires the subdued-light handling described on its own record.
03Half-life asymmetryThe two somatotropic components have markedly different reported clearance — roughly thirty minutes against approximately two hours. Time-course designs should account for the asymmetry rather than treating the pair as a single agent.
04DocumentationThe blended preparation carries content values for both constituents on its certificate. Record both; the ratio, not just the total, is the experimentally relevant figure.

Storage

Every component is supplied lyophilised and is stored independently at −20 °C, protected from light and moisture. Components are not pre-mixed: each vial carries its own batch number and its own certificate of analysis, and each is reconstituted separately. Once in solution, hold at 2–8 °C and observe the interval stated on the batch certificate for that specific component — the shortest interval in the group governs the group.

Storage & handling guide

Research links

Two Doors Into the Somatotropic Axis

GHRH receptor agonism and GHS-R1a agonism are separate routes to the same axis, acting through different G-protein pathways.

Read entry

Handling & Storage11 March 20267 min read

How Peptides Degrade, and What Slows It Down

Hydrolysis, oxidation, deamidation and aggregation each have a different trigger. Knowing which one a compound is prone to determines how it should be handled.

Read entry

Quality & Testing18 June 20268 min read

How to Read a Certificate of Analysis

A certificate is a structured claim, not a seal of approval. Knowing which sections carry weight — and which are decoration — is the difference between verification and reassurance.

Read entry