Practical notes from the Macropus Peptides technical team for laboratories across Australia: how to take a lyophilised vial to a working stock, how bacteriostatic water behaves once opened, how closely related compounds differ in design, and where research peptides sit under Australian law.
The laboratory method for reconstituting lyophilised research peptides in bacteriostatic water, with a concentration chart for 2, 5, 10 and 20mg vials, U-100 unit arithmetic and the handling errors that compromise a stock.
Laboratory procedure for dissolving the 5+5mg and 10+10mg BPC-157 and TB-500 blend vials in bacteriostatic water, with a per-peptide concentration chart, U-100 unit arithmetic, a molar comparison and storage windows.
The laboratory method for reconstituting the 10mg CJC-1295 no DAC and Ipamorelin blend in bacteriostatic water, with a volume chart, U-100 unit arithmetic, storage temperatures and the case for one vial or two.
Laboratory reconstitution of AOD-9604: when to use bacteriostatic water and when dilute acetic acid helps, exact mg per mL figures for 2mg and 5mg vials, U-100 syringe arithmetic and storage once mixed.
A laboratory reference for measuring diluent with U-100 insulin syringes: barrel sizes, a units to mL conversion chart, and exact mg per mL arithmetic for 5mg and 10mg BPC-157 vials.
A reconstitution chart for 10mg, 15mg, 20mg and 30mg retatrutide vials at 1 to 4 mL of bacteriostatic water, with mg per mL and micrograms per U-100 unit, plus laboratory mixing and storage steps.
Preserved and unpreserved sterile water compared property by property: composition, behaviour after the first puncture, container limits, and a four-step checklist for selecting the correct diluent for a peptide experiment.
Two unrelated research peptides that are frequently studied side by side: how BPC-157 and TB-500 differ in length, origin and mechanism, and how to choose between separate vials, a pre-blended vial or a combined stock.
One peptide reproduces the hypothalamic releasing hormone, the other mimics the gastric hormone ghrelin. Sequence, receptor, signalling route, study history and the arithmetic of the 13mg plus 3mg blend, compared side by side.
Sermorelin is the unmodified 1-29 fragment of the releasing hormone; ipamorelin is a small synthetic ghrelin mimic. How their receptors, stability and research roles differ, and where CJC-1295 no DAC sits between them.
Two vials, one shared backbone and a single structural difference that changes how long the analogue stays in circulation. Sequence detail, mass figures, naming history, reconstitution strengths and which form suits which study design.
Two six residue peptides, two residues apart, both agonists at the ghrelin receptor. What the substitutions change in potency and selectivity, where hexarelin sits beside them, and how each vial reconstitutes.
Semaglutide activates one receptor, tirzepatide two and retatrutide three. A technical comparison of backbone design, receptor targets, molecular weights, reported half-lives and trial programmes, with cagrilintide and the amylin pathway alongside.
Three peptides used in metabolic research for very different reasons: a growth hormone fragment, a GHRH analogue acting on the pituitary and a mitochondrial-encoded peptide. Structure, targets, reported half-lives and study history compared.
IGF-1 LR3 binds the IGF-1 receptor at the end of the growth hormone axis, while CJC-1295 with Ipamorelin acts on the pituitary at the start. Structure, receptors, readouts and study design compared.
Ipamorelin and MK-677 both activate the ghrelin receptor, but one is a five residue peptide and the other an orally active small molecule. Chemistry, duration, selectivity and where tesamorelin fits.
The composition of bacteriostatic water, how its benzyl alcohol preservative works, the specification each lot must meet, its role as a multi-draw peptide diluent, and the cases where a different diluent is required.
AOD-9604 is a 16 amino acid fragment of human growth hormone carrying an N-terminal tyrosine. Its sequence and structure, what adipocyte and rodent studies examined, why it is not a growth hormone and how it compares with Frag 176-191.
ARA-290, also called cibinetide, is a short erythropoietin-derived peptide designed to activate tissue-protective signalling without driving red blood cell production. Its sequence, receptor, study history, reconstitution chart and a comparison with BPC-157 and KPV.
DSIP is a nine amino acid neuropeptide described in 1977 whose name outran its science: no gene or receptor has been confirmed. Its sequence, proposed mechanisms, half-life, a reconstitution chart and comparisons with melatonin and Epitalon.
Cartalax is a three amino acid bioregulator peptide, Ala-Glu-Asp, linked to cartilage research. Its sequence, how short bioregulators are proposed to act, how it differs from BPC-157 and Epitalon, and practical handling for the laboratory.
Reported plasma half-lives for BPC-157, TB-500, AOD-9604, GHRP-2 and DSIP, each with its model and source, and why circulation time and vial stability are two separate measurements.
Cagrilintide is a long-acting, lipidated amylin analogue. How amylin receptors are assembled from the calcitonin receptor and RAMPs, why the analogue was engineered, and how its design differs from semaglutide.
Retatrutide explained for laboratories: a 39 residue synthetic peptide acting on the GIP, GLP-1 and glucagon receptors, its albumin-binding design, the published research record by phase and its status in Australia.
BPC-157 explained: its 15 residue sequence and 1,419 Da mass, the angiogenesis, cell migration and nitric oxide pathways laboratories examine, its short half-life in animal models and its research-only status in Australia.
The two limits that govern a vial of bacteriostatic water, the sealed expiry date and the 28-day in-use period, with a storage timeline, refrigeration guidance and the signs that a vial must be discarded.
Reconstituted retatrutide is held at 2 to 8 °C and used within about 28 days under laboratory convention. A storage timeline for powder, solution and pens, the effect of freezing on a mixed vial, and matching vial size to use.
How Australian law applies to research peptides: the TGA and ARTG, Poisons Standard schedules, state and territory poisons legislation, import permits and anti-doping rules, with the current position of BPC-157, TB-500, AOD-9604 and DSIP.
Where retatrutide stands in Australia: phase 3 trials still running, no ARTG registration, the steps a medicine must pass before approval, and what research-use supply means for laboratories today.
Most questions we answer by email are not about which compound to buy. They are about what happens after the parcel arrives: how much diluent goes into a 5mg vial, how long a mixed stock keeps in the fridge, why one peptide dissolves cleanly and another stays cloudy, and whether a particular compound can be ordered in Australia at all. The research peptide blog collects those answers in one place, with the arithmetic shown, the published record cited by journal and year, and a clear line between what a study examined and what it did not.
Every post is written for in-vitro work. None of them gives amounts for people or animals, and none describes outcomes in people, because the materials we supply are laboratory reagents. Where a compound has a clinical trial history, the post names the trial phase and journal so the record can be checked, and stops there.
The preparation guides walk through reconstitution step by step. They cover how to add diluent down the vial wall, how to calculate milligrams and micrograms per millilitre, and how to read a U-100 insulin syringe as a measuring tool rather than guessing at units. Start with how to mix peptides with bacteriostatic water, then use the peptide calculator to check any volume before the first draw. Blends and acid-soluble fragments get their own walkthroughs, because a two-peptide vial and a fragment that needs dilute acetic acid behave differently from a single compound in water.
Diluent choice decides how long a stock stays usable. The diluent posts explain what the benzyl alcohol preservative does, how it differs from plain sterile water, and how long an opened vial is generally kept. The storage posts then follow a mixed peptide through the fridge, covering temperature, light, freeze and thaw, and when to split a stock into aliquots. Preserved diluent is stocked in three vial sizes for reconstitution, next to syringes, swabs and the other peptide lab supplies, so whatever a guide calls for fits in one checkout.
Each comparison lines up two or three closely related compounds on receptor target, chain length, published half-life and typical laboratory use. They exist because the right choice between, say, a GHRH analogue and a ghrelin receptor agonist depends on the question a laboratory is asking, not on which name is searched more often.
| Post type | What it covers | Where to start |
|---|---|---|
| Preparation guides | Diluent volumes, concentration arithmetic, syringe scales | Mixing peptides with bacteriostatic water |
| Storage and handling | Opened diluent, mixed stock, freeze and thaw, aliquots | How long an opened diluent vial lasts |
| Comparisons | Receptor, structure, half-life, research use | BPC-157 vs TB-500 |
| Compound explainers | Origin, sequence, mechanism, published record | What is AOD-9604 |
| Legal status | TGA, ARTG, Poisons Standard, state laws | Are research peptides legal in Australia |
None of these compounds is a registered medicine; the TGA sets their scheduling in the Poisons Standard, and every state and territory applies that schedule through its own legislation. The legal post explains how those layers fit together and what research-use supply means in practice. Read it as a map of the rules, then confirm the current schedule with your own institution before ordering.
Each post links to the products it discusses, and each product page links back to the guides written about it. When a guide settles the question, the complete peptide catalogue is one click away, as are the growth hormone research peptides, recovery research peptides and starter kits with water and syringes. Every vial ships from Australian stock, lot-numbered, with a certificate of analysis for its batch.