IGF-1 LR3, the long-acting IGF-1 analog, documented lot by lot.
IGF-1 LR3 quality and supply chain
IGF-1 Research covers IGF-1 LR3, the 83-residue IGF-1 analog, and publishes the independent laboratory result for every lot sold through Klow.bio.
Last updated
From manufacturing partner to purchase
Every IGF-1 LR3 lot follows the same path. The later steps are published, so you can check them for any lot.
- Qualified manufacturing partner IGF-1 LR3 research material is produced by a qualified manufacturing partner within IGF-1 Research’s supply chain.
- IGF-1 Research specifications Material is produced and evaluated against IGF-1 Research’s defined specifications and quality requirements. Details
- Incoming and batch documentation Each batch is documented on receipt and assigned a lot number, printed on every vial label.
- Independent analytical testing Samples from the lot are tested by ILS Laboratories for HPLC-UV purity, HPLC-RTM identity and net content, with endotoxin and PCR where listed. Details
- Lot review and release Results are reviewed against the stated specification (≥95% HPLC-UV purity, identity confirmed by HPLC retention-time match against a reference standard) before release.
- COA and analytical record The lot record and laboratory certificate are published under the lot number. Details
- Lot verification Anyone can look the lot up and confirm the result with the laboratory. Details
- Purchase through Klow.bio Released lots are available through Klow.bio, the purchasing platform operated by Klow Labs. Details
Controlled supply chain
IGF-1 Research works with qualified manufacturing partners and maintains defined specifications and quality requirements for IGF-1 LR3 research material. IGF-1 Research is not the physical manufacturer; its role is to control what is sourced, document each batch, have it tested independently and publish the results.
Defined specifications
IGF-1 Research’s stated release specification is ≥95% HPLC-UV purity with identity confirmed by HPLC retention-time match against a reference standard of 9111.55 g/mol. The full specification, from molecular formula to physical form, is published on the IGF-1 LR3 specifications page.
Independent analytical testing
Testing is performed by ILS Laboratories, an independent laboratory, not in-house. Instead of a "third-party tested" badge, each lot's actual results are published: current lots report 99.69% purity, with identity confirmed on every lot. How each test works.
Lot-level transparency
Any vial can be traced in one path: product, lot number, testing, certificate and verification. Start with the lot number on the label at igf1.bio/verify.
Availability
Released lots are available through Klow.bio, the purchasing platform operated by Klow Labs, which also operates IGF-1 Research.
Current lots
The published end of the supply chain: every released lot and its results.
| Lot | Vial size | Net content | Purity (HPLC-UV) | Identity (HPLC-RTM) | Endotoxin (LAL) | Microbial (PCR) | Reported | COA |
|---|---|---|---|---|---|---|---|---|
| KB-17790 | 1 mg | 1.04 mg | 99.69% | Confirmed | Not tested | Not tested | View lot KB-17790 |
Testing laboratory: ILS Laboratories. Release specification: purity ≥95% by HPLC-UV with identity confirmed by HPLC retention-time match against a reference standard. Results apply only to the lot listed. Certificates list the testing client as Klow.bio / Klow Labs LLC, the company that operates IGF-1 Research.
Why researchers choose IGF-1 Research
Each reason links to the evidence behind it.
Dedicated IGF-1 LR3 research focus
One compound, not a catalog of unrelated products.
Controlled manufacturing supply chain
Material sourced through qualified manufacturing partners.
Defined release specifications
≥95% HPLC-UV purity with identity confirmed by HPLC retention-time match against a reference standard.
Independent analytical testing
Every lot tested by ILS Laboratories, with the results shown.
Lot-specific documentation
A public record for every lot, with dates and laboratory reference numbers.
COA access
The laboratory certificate for each lot.
Lot verification
Look up any lot by the number on the vial.
Transparent research-use-only positioning
Clear about what the material is for and what we don't provide.
Current availability through Klow.bio
Live stock, pricing and checkout.
Buy IGF-1 LR3
1 mg vials. Current lot KB-17790 tested at 99.69% purity with identity confirmed by HPLC retention-time match against a reference standard. Current purchasing is available through Klow.bio.