IGF-1 LR3
A long-acting IGF-1 analog studied in muscle-growth research.
Get told when a price moves or a lab test changes.
Observed median price
$102
Every observation
| Date | Observed |
|---|---|
| $77.10 | |
| $6.90 | |
| $75.00 | |
| $89.99 | |
| $97.49 | |
| $97.49 | |
| $97.49 | |
| $97.49 | |
| $97.49 | |
| $87.50 | |
| $85.00 | |
| $87.50 | |
| $87.50 | |
| $89.99 | |
| $87.50 | |
| $87.50 | |
| $87.50 | |
| $89.99 | |
| $85.00 | |
| $85.00 | |
| $87.50 | |
| $87.50 | |
| $87.50 | |
| $89.99 | |
| $87.50 | |
| $87.50 | |
| $87.50 | |
| $87.50 | |
| $89.99 | |
| $87.50 | |
| $87.50 | |
| $87.50 | |
| $97.49 | |
| $97.49 | |
| $97.49 | |
| $79.99 | |
| $89.99 | |
| $89.99 | |
| $89.99 |
Median of 9 listings' 30-day changes; 15 excluded for insufficient history.
24
Active listings
1 · 98.1%
Independent lab tests
$7–$640
Observed price range
4
Known aliases
Read from the certificate, not re-measured by VialGrade. Purity is not a grade. Purity vs grade
Understand this compound
What is IGF-1 LR3?
Limited human dataa.k.a. Long R3 IGF-1A souped-up, longer-lasting lab version of IGF-1, the growth factor your body releases in response to growth hormone. Studied for muscle growth, with a real risk of low blood sugar.
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?
The science
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.
Current market
The IGF-1 LR3 market
Every IGF-1 LR3 listing we track — 24 in all. The standout picks first where the evidence supports them, then the full table, ranked by what a milligram really costs wherever the vendor published a strength we can read.
Open full marketIGF-1 LR3 1mg 10-vial kit
Chameleon PeptidesA
$616$61.6/mg-54% vs median
Lowest price per mg that isn't flagged as suspiciously cheap.
In stockChecked 4 days ago
IGF-1 LR3 PEPTIDE 1MG/10MG VIAL 10 Milligrams
Umbrella LabsC-
$301$30.1/mg-78% vs median
Lowest real cost per active mg — price divided by measured purity.
In stockChecked 10 hours ago
IGF-1 LR3 (Media Grade) 1mg
Behemoth LabzC
$67$67.5/mg-50% vs median
The most recently re-verified listing on this market.
UnavailableChecked 9 hours ago
IGF-1 LR3 1MG 1MG
Modern AminosB
$64$64.0/mg-53% vs median
Ranked #3 of 18 listings by price per milligram.
In stockChecked 10 hours ago
IGF-1 LR3 10 Vials / 1MG
Ascend Bio Labs
$640$64.0/mg-53% vs median
Ranked #4 of 18 listings by price per milligram.
UnavailableChecked 1 month ago
Compare by real cost
Every IGF-1 LR3 listing, cheapest per mg first
Sticker prices hide the size, so listings are ranked by what a milligram actually costs — with independently tested purity where it exists. All 24 are here: the last 6 are listings whose vendor never published a strength we can read, so they have no per-mg figure to sort on.
| # | 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 | Chameleon Peptides | 10mg total10-vial kit each | $616 | $61.6/mg | 98.1% | $62.8/mg | View |
| 3 | Modern Aminos | 1mg total | $64 | $64.0/mg | — | $65.2/mg | View |
| 4 | Ascend Bio LabsUnavailable | 10mg total10 Vials / 1MG each | $640 | $64.0/mg | — | $65.2/mg | View |
| 5 | Behemoth LabzUnavailable | 1mg total | $67 | $67.5/mg | — | $68.7/mg | View |
| 6 | Ascend Bio LabsUnavailable | 3mg total3 Vials / 1MG each | $204 | $68.0/mg | — | $69.3/mg | View |
| 7 | Ascend Bio LabsUnavailable | 2mg total2 Vials / 1MG each | $144 | $72.0/mg | — | $73.4/mg | View |
| 8 | Bluum Peptides | 1mg total | $75 | $75.0/mg | — | $76.4/mg | View |
| 9 | Peptide Pros | 1mg total | $90 | $90.0/mg | — | $91.7/mg | View |
| 10 | Umbrella Labs | 1mg total | $90 | $90.0/mg | — | $91.7/mg | View |
| 11 | Ascend Bio LabsUnavailable | 1mg total | $95 | $95.0/mg | — | $96.8/mg | View |
| 12 | Sports Technology Labs | 1mg total | $135 | $135.0/mg | — | $137.6/mg | View |
| 13 | Biotech Peptides | 1mg total | $145 | $145.0/mg | — | $147.8/mg | View |
| 14 | Core Peptides | 1mg total | $150 | $150.0/mg | — | $152.9/mg | View |
| 15 | Biotech Peptides | 100mcg total | $27 | $270.0/mg | — | $275.1/mg | View |
| 16 | Core Peptides | 100mcg total | $28 | $280.0/mg | — | $285.3/mg | View |
| 17 | Chameleon Peptides | 1mg total | $374 | $374.0/mg | 98.1% | $381.1/mg | View |
| 18 | Swiss Chems | 1mg total | $600 | $599.6/mg | — | $611.0/mg | View |
| Listed, but not rankable — no published strength to price per mg | |||||||
| — | PurerawzUnavailable | 1 vial | $7 | no size published | — | — | View |
| — | Behemoth LabzUnavailable | 1 vial | $13 | no size published | — | — | View |
| — | Nootropic Source | 1 vial | $35 | no size published | — | — | View |
| — | Eternal Peptides | 1 vial | $70 | no size published | — | — | View |
| — | Cernum BiosciencesUnavailable | 1 vial | $105 | no size published | — | — | View |
| — | Vici Peptides | 1 vial | $114 | no size published | — | — | View |
Open the full IGF-1 LR3 market
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. A vendor shown as Unavailable or Low stock is priced here but not currently buyable.
Independent testing
IGF-1 LR3 — independent lab tests
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 |
What the research says
Scientific evidence & regulatory status
What the published literature actually shows about IGF-1 LR3 — separate from any vendor’s marketing. Each finding links to its paper. This is education, not medical or dosing advice.
Regulatory status
No FDA-approved drug
Not FDA-approved; an engineered IGF-1 analog sold as research-use-only material. Recombinant human IGF-1 itself is approved as Increlex (mecasermin, 2005) for severe primary IGF-1 deficiency, but LR3 is a different, unapproved molecule. WADA prohibits IGF-1 and its analogs at all times (S2.3).
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.
General information, not legal or medical advice. VialGrade sells nothing and encourages no human use.
Research notes aren’t product proof
Research summaries describe published literature and market data only. They do not establish the identity, quality, safety, or legal status of any listed physical product.