Buying Tesamorelin? Check the lot first.
Tesamorelin quality and supply chain
Tesamorelin Research Supply is a buyer's guide to Tesamorelin research material: sizes, prices, the current lot's independent results and how ordering through Klow.bio works.
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From manufacturing partner to purchase
Every Tesamorelin lot follows the same path. The later steps are published, so you can check them for any lot.
- Qualified manufacturing partner Tesamorelin research material is produced by a qualified manufacturing partner within Tesamorelin Research Supply’s supply chain.
- Tesamorelin Research Supply specifications Material is produced and evaluated against Tesamorelin Research Supply’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
Tesamorelin Research Supply works with qualified manufacturing partners and maintains defined specifications and quality requirements for Tesamorelin research material. Tesamorelin Research Supply 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
Tesamorelin Research Supply’s stated release specification is ≥95% HPLC-UV purity with identity confirmed by HPLC retention-time match against a reference standard of 5135.86 g/mol. The full specification, from molecular formula to physical form, is published on the Tesamorelin 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 99.54% 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 buytesamorelinpeptide.com/verify.
Availability
Released lots are available through Klow.bio, the purchasing platform operated by Klow Labs, which also operates Tesamorelin Research Supply.
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-77284 | 10 mg | 10.45 mg | 99.54% | Confirmed | Not tested | Not tested | View lot KB-77284 |
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 Tesamorelin Research Supply.
Why researchers choose Tesamorelin Research Supply
Each reason links to the evidence behind it.
Dedicated Tesamorelin 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 Tesamorelin
10 mg vials. Current lot KB-77284 tested at 99.54% purity with identity confirmed by HPLC retention-time match against a reference standard. Current purchasing is available through Klow.bio.