IGF-1 LR3 1mg 1mg
A recombinant analog of insulin-like growth factor 1 carrying an arginine substitution and a 13-amino-acid N-terminal extension.
Observed price
Median $/mg
$82.5/mg
Range $/mg
$30.1/mg–$673.2/mg
This listing
#8 of 8
priciest/mg
Real / active mg
$686.0/mg
Compared by cost-per-mg against 8 vendor listings of this compound whose size we can read. Real / active mg divides cost-per-mg by measured purity. Read from the certificate, not re-measured by VialGrade.
- Availability
- In stock
- Checked
- 43 minutes ago
Hands you to chameleonpeptides.com — VialGrade doesn’t sell or take payment
Chameleon Peptides
Unclaimed page
13
Lab tests
99.4%
Median purity
56
Listings
Real listing aggregated from the vendor's public page. Buying happens on their site, never on VialGrade — outbound links stay off until the affiliate step is approved.
Independently tested — with one caveat
- An independent lab record backs Chameleon Peptides' IGF-1 LR3 at 98.1% — the exact evidence most listings lack.
- A certificate covers one submitted batch, not every vial — confirm it matches the batch you receive.
How to verify this yourself
Check the seller's COA is for YOUR batch number, then paste it into Verify to confirm it's a real, unedited Janoshik record.
Open the Verify toolCompare by real cost
Cheapest IGF-1 LR3, by price per mg
Vials come in different sizes, so the sticker price lies. This ranks every listing by what a milligram actually costs — with independent test purity where we have it.
| # | Vendor | Size | Price | Per mg | Tested purity | Real $/active mg | |
|---|---|---|---|---|---|---|---|
| 1 | Umbrella Labs | 10mg total10 Milligrams each | $301 | $30.1/mg · too cheap? | — | $30.7/mgbest value | View |
| 2 | Swiss Chems | 1mg total | $60 | $60.0/mg | — | $61.1/mg | View |
| 3 | Modern Aminos | 1mg total | $64 | $64.0/mg | — | $65.2/mg | View |
| 4 | Bluum Peptides | 1mg total | $75 | $75.0/mg | — | $76.4/mg | View |
| 5 | Peptide Pros | 1mg total | $90 | $90.0/mg | — | $91.7/mg | View |
| 6 | Umbrella Labs | 1mg total | $90 | $90.0/mg | — | $91.7/mg | View |
| 7 | Sports Technology Labs | 1mg total | $125 | $125.0/mg | — | $127.4/mg | View |
| 8 | Chameleon Peptides | 1mg total | $673 | $673.2/mg | 98.1% | $686.0/mg | View |
Real $/active mg divides the price-per-mg by the measured purity — the honest cost of the actual peptide, so a 90%-pure vial isn’t compared as if it were 99%. Too cheap? flags a listing far below the market rate — often underdosing or a fake, not a deal. The crown marks the cheapest non-outlier; best value marks the lowest real cost per active mg.
Understand this compound
What is IGF-1 LR3?
Limited human dataa.k.a. Long R3 IGF-1A long-acting IGF-1 analog studied in muscle-growth research.
Good to know: Non-selective IGF-1 receptor activation raises theoretical concerns about abnormal tissue growth, and its extended half-life increases the risk of hypoglycemia associated with IGF-1 pharmacology.
How does IGF-1 LR3 work?
A modified 83-amino-acid IGF-1 analog with an Arg3 substitution and a 13-amino-acid N-terminal extension that reduces binding to IGF binding proteins, extending half-life (~20-30 hours) and activating IGF-1 receptor PI3K/Akt and MAPK/ERK pathways.
Mechanism of action from published research — how the molecule behaves, not a claim about any product or any human-use effect.
What is IGF-1 LR3 researched for?
Studied for muscle hypertrophy/hyperplasia and cell proliferation via satellite cell activation, in muscle-growth and metabolic research.
- Muscle & performanceStudied in muscle-growth, repair, and physical-performance research.
How far has the research gone?
Limited human data; evidence is mostly mechanistic, lab, and animal research, without clinical validation in humans for muscle-building use.
Where the science stands — an approved drug is not the same as the research-grade material a vendor sells, which is unregulated regardless.
What should I check before buying?
- Independent purity. Look for a third-party COA (Janoshik or MZ) showing a measured purity — not just a number the vendor typed.
- Batch match. The strongest evidence is a certificate for the exact batch you’ll receive, attributed to this vendor — check the cross-verification on the listing.
- Vendor reputation. See how the vendor is talked about in the community before trusting a new name.
Research context only — VialGrade never gives dosing, medical, or human-use guidance.
The lab evidence
What we could verify
Each row answers a different question. Passing the identity test doesn’t mean it’s sterile or correctly dosed — we show each answer separately.
Identity — independent test
EstablishedAn independent lab record backs this vendor's testing for this compound.
Measured purity (HPLC)
EstablishedIndependently measured 98.13%. Read from the certificate, not re-measured by VialGrade.
Batch traceability
UnknownNo specific batch on this listing has been matched to an independent record.
Sterility & endotoxin
Not testedA purity COA does not measure sterility or endotoxins — no such test is on record.
Dose / fill accuracy
UnknownVialGrade does not independently measure vial fill or delivered dose.
These certificates are for IGF-1 LR3 across every maker VialGrade tracks — not necessarily Chameleon Peptides’s own stock. This listing’s specific evidence is the matrix above.
Independent testing
Independent lab tests on record for IGF-1 LR3
Real, publicly verifiable third-party tests. Purity is read from the certificate itself. A test reflects one lab’s result for one submitted batch — not a guarantee that every vial matches.
How does this data get here?
Every record below is a real certificate of analysis, gathered two ways: from the public verification feeds that independent labs (like Janoshik) publish, and from the certificates vendors post on their own product pages. We open each certificate document and read the measured purity, content, batch, and date directly off it — a scraper can’t read a number printed inside an image, so this is done by machine vision, then recorded here with a link back to the original.
Nothing here is typed in by a vendor or invented by us. Where a certificate is missing, we say so rather than filling the gap.
We re-check the lab feed, too. A “still listed” tag means the certificate is currently public in Janoshik’s database — we re-verify against the live feed and stamp the date. If a cert is later pulled, the tag flips. It’s a freshness check on the same source, not a second independent opinion.
What a certificate does & doesn’t prove
Three different questions. Purity (“how clean?”), identity (“is it the right molecule?”, a mass-spec test), and content (“did I get the labeled mg?”) are separate. A vial can be 99% pure and still be the wrong peptide, or the right peptide underdosed. We flag the measured dose against the label above; underdosing is the most common real fraud.
Who submitted the sample matters. Most of these are vendor-submitted — the seller chose which vial to send, so one good certificate doesn’t prove every batch is the same. The gold standard is a blind test, where a buyer sends a vial they bought as a normal customer. Same label doesn’t prove same product; same batch number doesn’t prove same batch.
98.1%
highest tested purity
| Certificate | Manufacturer | Batch | Purity | Content / dose | Lab | |
|---|---|---|---|---|---|---|
 | Chameleon Peptides | — | 98.13% | 1.08 mg | Janoshik Analytical | View |
Independent test on record — 98.13%
This listing doesn't advertise third-party testing, but we do hold an independent record for Chameleon Peptides's IGF-1 LR3, measured at 98.13%. Bonus evidence, not a guarantee of this specific batch.
- Independent record. A third-party test references Chameleon Peptides for IGF-1 LR3 at 98.13%.
Certificate analyzed 06 MAR 2026
Open the independent certificateCross-checks the vendor’s testing claim against independent lab records. Purity is read from the lab's certificate as issued — VialGrade doesn't re-run the assay or sample the vial. It reflects one lab's result for one submitted batch, not every vial. Never a statement that a product is safe, sterile, or correctly dosed.
Research-use-only — not FDA-approved
Sold “for research use only,” this compound is not FDA-approved for human use and has not been evaluated for safety, purity, or sterility in people. It is generally not a scheduled controlled substance, so buying it as a research chemical is typically not itself a drug crime — but marketing or using it as a drug is not lawful, and it is not a dietary supplement.
Read the full US legal overview →General information, not legal or medical advice. VialGrade sells nothing and encourages no human use.
Same compound
See the full IGF-1 LR3 market — all 13 vendors, price history & lab tests