IDUN Peptides GLP-3 RT Research Guide 2026: Molecular Profile, COA, Testing & LOOT30
If you're evaluating GLP-3 RT as a laboratory research compound, IDUN Peptides currently lists it from $44.99, with a stated ≥99% HPLC purity specification, third-party testing and a Certificate of Analysis. If you're eligible to purchase for legitimate research, LOOT30 offers up to 30% off; confirm the exact discount displayed at checkout.
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What Is GLP-3 RT?GLP-3 RT is a synthetic triple-receptor agonist research compound designed to engage three receptor systems: GLP-1, GIP and glucagon. That three-target profile is the feature that distinguishes it from dual incretin research compounds.
IDUN's current product page identifies GLP-3 RT with CAS 2381089-83-2 and describes it as a 39-amino-acid linear peptide with a fatty-diacid moiety. The page lists a molecular weight of 4,703.5 Da and a stated ≥99% HPLC purity specification.
The compound is explicitly sold for in-vitro research and laboratory use only, not human or veterinary use.
GLP-3 RT Molecular ProfileIDUN currently provides the following specifications:
| Specification | IDUN listing |
|---|---|
| Compound | GLP-3 RT |
| Classification | Triple GLP-1/GIP/glucagon receptor agonist |
| CAS | 2381089-83-2 |
| Structure | 39-amino-acid linear peptide with fatty-diacid moiety |
| Molecular weight | 4,703.5 Da |
| Molecular formula | C₂₁₉H₃₃₈N₄₈O₆₃ |
| HPLC purity | ≥99% |
| Appearance | White to off-white lyophilized powder |
| Listed vial masses | 10 mg / 20 mg |
| Starting price | $44.99 |
These specifications are from IDUN's current product listing.
One point worth noting for researchers comparing online sources: GLP-3 RT pages from different suppliers sometimes display slightly different molecular-weight or formula information. That's precisely why a researcher should identify the material by its specific product documentation, identifier and batch records, rather than copying a specification from an unrelated listing.
Why the Triple-Agonist Design MattersThe easiest way to understand GLP-3 RT is to start with its receptor targets.
It is described as simultaneously engaging:
- GLP-1 receptor
- GIP receptor
- Glucagon receptor
GLP-1 and GIP are incretin-related signaling pathways. Glucagon provides a third signaling component associated with metabolic processes including hepatic substrate utilization and energy expenditure.
Research into triple agonists asks an interesting question: can simultaneous activation of these pathways produce a different signaling profile from single- or dual-receptor approaches?
That question is primarily relevant to preclinical and laboratory research, where investigators can isolate receptor activity and examine downstream biological effects.
IDUN describes GLP-3 RT as a triple-agonist compound for research involving metabolic signaling, body-composition-related pathways and hepatic research.
GLP-3 RT vs Dual-Agonist Research CompoundsA useful way to place GLP-3 RT in context is to compare receptor architecture rather than make broad claims about which compound is “better.”
IDUN's catalog includes GLP-2 TZ, which it describes as a GLP-1/GIP dual agonist, alongside GLP-3 RT. GLP-3 RT adds glucagon receptor activity to that two-receptor framework.
That makes the comparison straightforward:
| Research profile | Receptor targets |
|---|---|
| GLP-3 RT | GLP-1 + GIP + glucagon |
| GLP-2 TZ | GLP-1 + GIP |
The extra receptor target is the defining research distinction. It doesn't automatically mean one compound is appropriate for every experiment. The right choice depends on the biological question being investigated.
GLP-3 RT and Retatrutide TerminologyResearchers searching for GLP-3 RT will encounter another name frequently: retatrutide, also associated with LY3437943.
Recent research-oriented sources identify GLP-3 RT/LY3437943 as a triple GLP-1/GIP/glucagon agonist.
There is an important practical lesson here.
When purchasing or documenting a research compound, don't rely on a nickname alone. Record the exact product name, identifier, supplier SKU and batch/lot information appearing on the documentation.
That makes your research records considerably easier to audit later.
IDUN GLP-3 RT HPLC PurityIDUN currently states ≥99% purity by HPLC for GLP-3 RT.
HPLC, or high-performance liquid chromatography, is an analytical separation technique commonly used to characterize the chromatographic purity profile of a compound.
But a purity percentage shouldn't be treated as a complete analytical picture.
For example, if a report says a GLP-3 RT sample has 99% HPLC purity, that tells you something important about its chromatographic profile. It doesn't mean HPLC has answered every possible question about molecular identity, endotoxin, sterility, residual materials or other quality attributes.
That's why a GLP-3 RT COA is more useful when you read the complete report rather than focusing on one number.
What Does Mass Spectrometry Add?Mass spectrometry approaches the problem differently.
Instead of primarily separating components chromatographically, MS measures mass-to-charge characteristics that can be compared with the expected molecular identity.
IDUN says its GLP-3 RT documentation includes mass-spectrometry confirmation alongside third-party HPLC verification. It also says endotoxin testing results are included.
So when reviewing GLP-3 RT HPLC vs mass spectrometry, think of them as complementary:
HPLC: What does the chromatographic purity profile look like?
Mass spectrometry: Does the measured molecular mass support the expected identity?
Neither should be treated as a substitute for the other.
How to Evaluate an IDUN GLP-3 RT COAA useful COA review starts with traceability.
Check the compound identityMake sure the document corresponds to GLP-3 RT and that the identifying information matches the product being evaluated.
Check the lot numberA lot number is the bridge between a laboratory report and the physical material.
Check the test dateThe date tells you when the reported material was analyzed.
Check the analytical methodsDon't just look for “tested.” Look at what was actually tested and by which method.
Check the numerical resultsReview the reported HPLC result and any identity, endotoxin or other analytical results included in the report.
Check the documentation sourceIDUN says GLP-3 RT COAs are included with orders and can also be accessed through QR codes on physical vials.
This type of batch-oriented documentation is particularly useful when maintaining laboratory records.
GLP-3 RT Testing: Why the Full Report MattersSuppose two suppliers both advertise GLP-3 RT as “99%+ pure.”
At first glance, their products may look identical.
But the underlying documentation could be quite different.
One report might provide only a purity figure. Another might include HPLC, identity confirmation, endotoxin results, lot information and testing dates. Another could include an even broader QC panel.
Current GLP-3 RT supplier pages demonstrate that testing packages can vary substantially. For example, some suppliers currently publish additional measurements such as net peptide content, LC-MS identity, heavy-metal screening, sterility and endotoxin results.
That doesn't mean every laboratory requires every possible test. It means “99% purity” isn't a complete supplier-comparison framework.
IDUN GLP-3 RT PriceThe current IDUN catalog lists GLP-3 RT from $44.99.
The product page shows multiple configurations, including 10 mg and 20 mg options and larger multi-vial quantities.
For a meaningful price comparison, researchers should compare equivalent quantities and documentation rather than comparing the headline price of different vial sizes.
A $44.99 starting price and a $100 listing elsewhere may not represent equivalent quantities or testing packages.
Save Up to 30% With LOOT30The promotional code for this guide is:
LOOT30 — up to 30% off
Because the offer is advertised as up to 30%, the actual reduction can depend on the applicable product or checkout conditions. Apply the code and confirm the final total before ordering.
At a hypothetical full 30% reduction, the $44.99 starting price would mathematically become approximately $31.49 before taxes or other applicable charges.
How GLP-3 RT Fits Into the IDUN CatalogGLP-3 RT sits in a broader catalog of research compounds.
IDUN's current catalog includes GLP-2 TZ, Tesamorelin, CJC-1295 No DAC, Ipamorelin, MOTS-c, NAD+ Buffered, Selank, Semax, DSIP, SS-31 and other compounds. The catalog currently shows 22 research compounds across its product categories.
For researchers, this makes category and receptor profile useful ways to navigate the catalog.
Someone studying incretin-related signaling may naturally examine GLP-3 RT alongside GLP-2 TZ. Someone studying the GHRH/GH axis has a different set of relevant compounds.
The key is to start with the experimental question, then evaluate the compound's identity and documentation.
GLP-3 RT Storage and Physical FormIDUN supplies GLP-3 RT as a lyophilized powder and currently lists storage at -20°C, protected from light and moisture.
The company's page also provides handling and reconstitution information. Because the product is explicitly designated for laboratory research, researchers should follow their institution's validated SOPs and current manufacturer documentation rather than treating an online article as an experimental protocol.
This guide intentionally does not provide administration or human-use instructions.
What Makes IDUN GLP-3 RT Worth Evaluating?The strongest reason to consider the IDUN listing is the combination of defined specifications and documented testing.
The current product page provides:
- ≥99% HPLC purity specification
- Third-party HPLC testing
- Mass-spectrometry confirmation
- Endotoxin testing information
- Certificate of Analysis
- Batch documentation
- Defined molecular specifications
- Multiple quantity configurations
- A $44.99 starting price
That's a much more useful starting point for laboratory procurement than a product page that gives only a compound name and a price.
The caveat is straightforward: supplier-provided documentation should be evaluated according to the requirements of the individual research program. A laboratory with stricter independent verification requirements may reasonably want additional testing.
GLP-3 RT Research Discount FAQ What is the IDUN Peptides GLP-3 RT promo code?The promotional code supplied for this article is LOOT30.
How much does LOOT30 save on GLP-3 RT?LOOT30 is advertised as providing up to 30% off. Enter it at checkout to see the applicable reduction for your selected GLP-3 RT configuration.
What is IDUN GLP-3 RT's current starting price?IDUN currently lists GLP-3 RT from $44.99.
How much would GLP-3 RT cost after a full 30% discount?At the current $44.99 starting price, a full 30% reduction would mathematically produce approximately $31.49, before applicable taxes or other charges.
Does IDUN GLP-3 RT come with a COA?Yes. IDUN says every GLP-3 RT vial includes a Certificate of Analysis with third-party HPLC verification, mass-spectrometry confirmation and endotoxin testing results.
What purity does IDUN claim for GLP-3 RT?The current listing states ≥99% purity verified by HPLC.
What receptors does GLP-3 RT target?GLP-3 RT is described as targeting GLP-1, GIP and glucagon receptors simultaneously.
Is GLP-3 RT intended for human use?No. IDUN explicitly labels the product for in-vitro research and laboratory use only, not human or veterinary use.
Is LOOT30 guaranteed to give exactly 30% off?No. The supplied promotion is up to 30% off, so the checkout total is the appropriate place to verify the actual discount.
Final TakeawayGLP-3 RT is interesting from a research perspective because its defining feature is its three-receptor profile: GLP-1, GIP and glucagon. For researchers evaluating an IDUN listing, the important practical questions are compound identity, molecular specifications, batch traceability and the quality of the analytical documentation.
IDUN currently lists GLP-3 RT from $44.99, with a stated ≥99% HPLC purity specification and COA documentation.
If you're eligible to purchase it for legitimate laboratory research, LOOT30 can provide up to 30% off. Apply the code through the link below and confirm the actual savings displayed at checkout.