For Research Use Only. Not for Use in diagnostic procedures.

This product is solely intended for research purposes as a chemical compound. Its designation permits its use exclusively for in vitro testing and laboratory experimentation. All information regarding this product provided on our website is purely educational. By law, any form of bodily introduction of this product into humans or animals is strictly prohibited. It should only be handled by professionals who are licensed and qualified. This product is neither a drug, food, nor cosmetic, and must not be misrepresented, misused, or mislabeled as such.

GLP-1 S (50mg – 200mg)

Price:
Price range: $335.00 through $1,050.00
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In stock

GLP-1 S

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Save over 70%!

Cost per milligram $5.25 – $6.70
Purity 99.60%
Certified Endotoxin-safe Yes
Independently Tested Yes
  • Peptide Partners Manufacturer ID: VI32
  • Batch Id: SM202601

 

Research Studies

(for educational purposes only)

 

Study 1: Semaglutide promotes the proliferation and osteogenic differentiation of bone-derived mesenchymal stem cells through activation of the Wnt/LRP5/β-catenin signaling pathway

Authors: Yawei Tian, Huiming Liu, Xiaoxue Bao, Yukun Li

Source: https://www.frontiersin.org/journals/pharmacology/articles/10.3389/fphar.2025.1539411/full

Scientific Findings

This in vitro study investigated the effects of semaglutide on bone-derived mesenchymal stem cells (BMSCs). The results demonstrated that semaglutide promotes BMSC proliferation and osteogenic differentiation. This was evidenced by increased alkaline phosphatase (ALP) activity, enhanced mineralization, and upregulation of osteogenic markers such as osteocalcin (OCN) and Runt-related transcription factor 2 (RUNX2). RNA sequencing analysis revealed the activation of the Wnt/LRP5/β-catenin signaling pathway. The study confirmed that semaglutide’s pro-osteogenic effects are mediated through this pathway by using a Wnt inhibitor (DKK1) and activator (LiCl).

Plain English Interpretation

This laboratory study explored how the drug semaglutide affects stem cells taken from bone marrow. The researchers found that semaglutide encourages these stem cells to multiply and transform into bone-forming cells. This was observed through various experiments that showed an increase in the activity of enzymes and proteins essential for bone formation. The study identified a specific communication pathway within the cells, known as the Wnt pathway, which is activated by semaglutide to produce these bone-strengthening effects. This suggests that semaglutide could have potential benefits for bone health by promoting the generation of new bone tissue.

 

Study 2: The effect of Semaglutide on mitochondrial function and insulin sensitivity in a myotube model of insulin resistance

Authors: Emmalie R. Spry, Kipton B. Travis, Kayla J. Ragland, Alexa J. Klein, John M. Zimmerman, Roger A. Vaughan

Source: https://www.sciencedirect.com/science/article/abs/pii/S0303720725001807

Scientific Findings

This study investigated the effects of semaglutide on C2C12 myotubes in an in vitro model of insulin resistance. The researchers found that while semaglutide did not alter insulin sensitivity, as measured by pAkt:Akt ratio, it did significantly increase the expression of genes associated with mitochondrial biogenesis and function, including PGC-1α, and TFAM. Furthermore, semaglutide treatment led to an increase in mitochondrial content and density, as well as an increase in maximal mitochondrial respiration. These findings suggest that semaglutide may improve metabolic health by enhancing mitochondrial function in skeletal muscle, independent of its effects on insulin signaling.

Plain English Interpretation

In this lab experiment, scientists looked at how the drug semaglutide affects muscle cells that have been made resistant to insulin, similar to what happens in type 2 diabetes. They discovered that while semaglutide didn’t make the cells more responsive to insulin, it did boost the number and activity of mitochondria, which are the ‘powerhouses’ of the cells. This means that semaglutide might help improve metabolism by making muscle cells better at producing energy, even if it doesn’t directly fix the insulin resistance problem.

 

Study 3: Semaglutide-mediated protection against Aβ correlated with enhancement of autophagy and inhibition of apotosis

Authors: Yan-fang Chang, Di Zhang, Wei-min Hu, Dong-xing Liu, Lin Li

Source: https://www.sciencedirect.com/science/article/abs/pii/S0967586820315332

Scientific Findings

This in vitro study investigated the neuroprotective effects of semaglutide in a SH-SY5Y cell line model of Alzheimer’s disease, induced by amyloid-β 25-35 (Aβ25-35). The results showed that semaglutide treatment restored cell viability that was inhibited by Aβ25-35. Mechanistically, semaglutide was found to enhance autophagy, as indicated by increased expression of autophagy-related proteins such as LC3-II, Atg7, and Beclin-1, and decreased expression of p62. Furthermore, semaglutide inhibited apoptosis by increasing the Bcl-2/Bax ratio. These findings suggest that semaglutide protects against Aβ-induced neurotoxicity by promoting autophagy and suppressing apoptosis.

Plain English Interpretation

In this laboratory study, scientists used a cell model to mimic the effects of Alzheimer’s disease on brain cells. They found that the drug semaglutide could protect these cells from damage. Semaglutide appeared to work in two main ways: first, it boosted the cells’ natural ‘recycling’ process, called autophagy, which helps clear out harmful substances. Second, it prevented the cells from self-destructing, a process known as apoptosis. This research suggests that semaglutide could have a protective effect on brain cells, which might be relevant for neurodegenerative diseases like Alzheimer’s.

Storage:

All of our manufacturing partners produce peptides using the Lyophilization (Freeze Drying) process, ensuring products maintain stability for shipping and storage for 12+ months.

In lyophilized form, they are shelf-stable for many weeks. However, for long-term storage, it is recommended to store them in the freezer.

We often hear concerns about the standard “discard after 28 days of first use” disclaimer. Don’t worry, this has nothing to do with studies regarding the efficacy of specific peptides. 28 days is the FDA requirement for producers of multi-use vials to prove their bacteriostatic maintains efficacy. This minimum requirement becomes the de facto standard.

In our experience, if you use proper sterile procedures and refrigerated storage, you can continue sampling from the same reconstituted vial for 3+ months.

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Third-party testing

Peptide Partners is committed to providing high-purity peptides at wholesale prices by frequently auditing its manufacturing partners using third-party laboratories. Independent analysis is vital to ensuring the quality and authenticity of your research peptides. Never trust a supplier that doesn’t submit to third-party testing. Never trust a certification that cannot be independently verified. All of the certificates that we provide can be validated on the third-party laboratory’s website.

Each product description contains a Manufacturer ID corresponding to the producer of that product. The table below contains the most recent third-party analyses for all manufacturers and peptides listed on Peptide Partners.

Current Purity certifications

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PeptideBatch IdManufacturerDatePurityLaboratory
RetatrutideRT202602WF032026-01-1399.63%TrustPointeView File
SemaglutideSM202601MZ212026-01-1099.70%TrustPointeView File
CagrilintideCAG202601MZ212026-01-1099.33%TrustPointeView File
TesamorelinTES202601WF032025-12-2999.71%TrustPointeView File
BPC-157BP202512WF032025-12-2999.46%TrustPointeView File
BPC-157/TB-500BB202512WF032025-12-2999.64%TrustPointeView File
GHK-CuGK202512SH072025-12-1999.79%BioRegenView File
MOTS-cMC202512WF032025-12-2299.89%BioRegenView File
RetatrutideRP260130VI322025-12-2299.72%TrustPointeView File
SS-31SS202512WF032025-12-1999.70%TrustPointeView File
RetatrutideRP202601DF052025-12-2299.63%TrustPointeView File
Ipamorelin/CJC-1295 (No DAC)CJIP202512WF032025-12-0999.80%TrustPointeView File
RetatrutideRP202511DF052025-12-1999.73%TrustPointeView File
RetatrutideRP20251020DF052025-11-1099.33%TrustPointeView File
RetatrutideRP20251001DF052025-10-1399.86%TrustPointeView File
TirzepatideTZ20250915DF052025-10-0399.74%TrustPointeView File
RetatrutideRP20250929VI322025-10-0399.47%TrustPointeView File
HumaninHP20250805WF032025-09-1999.92%BioRegenView File
MOTS-cYC20250807WF032025-09-1999.87%BioRegenView File
DSIPDS20250820SH072025-09-1999.88%BioRegenView File
SS-31SY20250806WF032025-09-1999.70%BioRegenView File
CJC/IpamorelinCI20250805WF032025-09-1199.84%TrustPointeView File
BPC-157BP20250808WF032025-09-0599.99%TrustPointeView File
SermorelinSM20250723WF032025-08-2799.84%BioRegenView File
TesamorelinTS20250722WF032025-08-2299.10%TrustPointeView File
CJC-1295 NDCJ20250724WF032025-08-2099.43%TrustPointeView File
SemaglutideSM20250801EJ122025-08-2099.34%TrustPointeView File
IpamorelinIP20250721WF032025-08-1599.64%TrustPointeView File
GHK-CuCU20250717SH072025-08-0999.73%BioRegenView File
TirzepatideTZ20250730EJ122025-08-0899.41%TrustPointeView File
NAD+ND20250503SH072025-07-3199.76%BioRegenView File
VIPVP20250511SH072025-07-3199.42%BioRegenView File
RetatrutideCD20250708SH072025-07-2599.42%TrustPointeView File
BPC/TB500BB20250630SH072025-07-1799.52%TrustPointeView File
TB500 (TB4)TB20250614SH072025-07-1799.68%TrustPointeView File

Current Endotoxin Certifications

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PeptideBatch IdManufacturerDateUSP ConformationLaboratory
IpamorelinIP202601WF032026-01-13ConformsTrustPointeView File
TB500TB202601WF032026-01-13ConformsTrustPointeView File
RetatrutideRT202602WF032026-01-13ConformsTrustPointeView File
SemaglutideSM202601MZ212026-01-10ConformsTrustPointeView File
CagrilintideCAG202601MZ212026-01-10ConformsTrustPointeView File
TesamorelinTES202601WF032025-01-06ConformsTrustPointeView File
BPC-157BP202512WF032025-12-30ConformsTrustPointeView File
BPC-157/TB-500BB202512WF032025-12-30ConformsTrustPointeView File
RetatrutideRP260130DF052025-12-22ConformsTrustPointeView File
SS-31SS202512WF032025-12-19ConformsTrustPointeView File
RetatrutideRP202601DF052025-12-22ConformsTrustPointeView File
Ipamorelin/CJC-1295 (No DAC)CJIP202512WF032025-12-08ConformsTrustPointeView File
RetatrutideRP202511DF052025-11-10ConformsTrustPointeView File
RetatrutideRP20251020DF052025-11-10ConformsTrustPointeView File
RetatrutideRP20251001DF052025-10-13ConformsTrustPointeView File
TirzepatideTZ20250915DF052025-10-03ConformsTrustPointeView File
RetatrutideRP20250929VI322025-10-03ConformsTrustPointeView File
HumaninHP20250805WF032025-09-19ConformsBioRegenView File
MOTS-cYC20250807WF032025-09-19ConformsBioRegenView File
DSIPDS20250820SH072025-09-19ConformsBioRegenView File
SS-31SY20250806WF032025-09-19ConformsBioRegenView File
CJC/IpamorelinCI20250805WF032025-09-03ConformsTrustPointeView File
BPC-157BP20250808WF032025-09-03ConformsTrustPointeView File
Bacteriostatic WaterBAC20250807SH072025-08-27ConformsBioRegenView File
TesamorelinTS20250722WF032025-08-20ConformsTrustPointeView File
CJC-1295 NDCJ20250724WF032025-08-20ConformsTrustPointeView File
SermorelinSM20250723WF032025-08-20ConformsTrustPointeView File
SemaglutideSM20250801EJ122025-08-20ConformsTrustPointeView File
IpamorelinIP20250721WF032025-08-11ConformsTrustPointeView File
GHK-CuCU20250717SH072025-08-08ConformsTrustPointeView File
TirzepatideTZ20250730EJ122025-08-04ConformsTrustPointeView File
NAD+ND20250503SH072025-07-29ConformsTrustPointeView File
VIPVP20250511SH072025-07-29ConformsTrustPointeView File
RetatrutideCD20250708SH072025-07-24ConformsTrustPointeView File
BPC/TB500BB20250630SH072025-07-17ConformsTrustPointeView File
TB500 (TB4)TB20250614SH072025-07-17ConformsTrustPointeView File

Current Heavy Metal Certifications

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PeptideBatch IdManufacturerDateUSP ConformationLaboratory
BPC-157BP202512WF032026-01-08ConformsTrustPointeView File
BPC-157/TB-500BB202512WF032026-01-08ConformsTrustPointeView File
TirzepatideTZ20250915DF052025-12-03ConformsTrustPointeView File
TB500 (TB4)TB20250614SH072025-11-24ConformsTrustPointeView File
BPC-157BP20250808WF032025-11-12ConformsTrustPointeView File
BPC/TB500BB20250630SH072025-11-12ConformsTrustPointeView File
CJC-1295 NDCJ20250724WF032025-11-12ConformsTrustPointeView File
GHK-CuCU20250717SH072025-11-12ConformsTrustPointeView File
IpamorelinIP20250721WF032025-11-12ConformsTrustPointeView File
RetatrutideRP20251020DF052025-11-12ConformsTrustPointeView File
SermorelinSM20250723WF032025-11-12ConformsTrustPointeView File
SS-31SY20250806WF032025-11-12ConformsTrustPointeView File
TB500 (TB4)TB20250614SH072025-11-12ConformsTrustPointeView File
TesamorelinTS20250722WF032025-11-12ConformsTrustPointeView File
TirzepatideTZ20250730EJ122025-11-12ConformsTrustPointeView File

Current Sterility Certifications

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ProductBatch IdManufacturerDateUSP Pass/FailLaboratory
Bacteriostatic WaterBAC202601WF032025-01-13PassTrustPointeView File
Bacteriostatic WaterBAC20250807SH072025-09-09PassTrustPointeView File
Meta-ZMZR20250713DF052025-08-26PassTrustPointeView File

Verifiable certificates

When obtaining research peptides, it is essential to validate the authenticity of the Certificate of Analysis (COA). Certificate fraud runs rampant throughout the research peptide supply community. The two most common forms are doctored images and stolen certificates. You can check for these two by making sure the third-party laboratory’s website shows that the certificate belongs to the supplier and the values haven’t been doctored. TrustPointe Analytics provides a few simple rules for verification:

When obtaining research peptides, it is essential to validate the authenticity of the Certificate of Analysis (COA). Certificate fraud runs rampant throughout the research peptide supply community. The two most common forms are doctored images and stolen certificates. You can check for these two by making sure the third-party laboratory’s website shows that the certificate belongs to the supplier and the values haven’t been doctored. TrustPointe Analytics provides a few simple rules for verification:

Beware of fraudulent laboratories

Not only must one remain vigilant about potentially fraudulent certificates, one must also be aware that there are third-party laboratories whose results cannot be considered reliable or scientifically valid. Unfortunately, there is significant evidence to suggest that one of the most popular third-party testing labs does not use scientifically sound methodologies and, in some cases, has fabricated results. There isn’t an easy remedy for this problem, but when labs are particularly bad, there tend to be a lot of discussion threads on various social platforms.

Interpreting Endotoxin Results (via TrustPointe)

Our friends at TrustPointe have provided the following detailed explanation to help interpret the results of the endotoxin testing.

We use the Charles River Endosafe PTS system to test for bacterial endotoxins following USP <85> guidelines:

  • USP <85> Bacterial Endotoxin Result: <x.xx EU/mL
    Because it’s reported as “<x.xx” this indicates the test did not detect endotoxin above the detection limit of the cartridge.
  • If a result is above the limit of detection of the cartridge, it will be reported as a number (without the “<“).

The following are suitability parameters that verify the system was working properly and the sample prep dilution is appropriate for accurate results. Peptides often interfere with endotoxin detection due to their tendency to bind or mask endotoxins, which can lead to inaccurate low results. To overcome this, samples are typically tested at a large dilution to reduce matrix interference and ensure reliable recovery and detection in compliance with USP <85>.  If the dilution is not correct, the run will fail suitability and we’ll need to adjust the dilution to ensure accurate results. We provide the suitability data to customers for transparency and so they can be confident in the results.

USP <85> Sample CV %:

  • CV stands for coefficient of variation, a measure of repeatability.
  • For our lab, CV has to be <25% or the result to be considered valid

USP <85> Spike CV %:

  • This refers to the precision of the positive control (spiked sample).
  • Again, for our lab CV has to be <25% or the result to be considered valid

USP <85> Spike Recovery

  • This tells us how much of the known endotoxin spike was recovered from your sample.
  • The acceptable range is 50–200% per USP <85>
NOT SUITABLE FOR HUMAN CONSUMPTION – INTENDED FOR RESEARCH ONLY

Thank you for choosing Peptide Partners.

NOTICE: All information provided above is strictly intended for educational and informational purposes. Our products are designed for research use solely and are not approved for human consumption. Please refrain from any form of ingestion.

By making a purchase from Peptide Partners, you acknowledge that you are acquiring Research Chemicals. Our products are exclusively intended for laboratory research purposes.

It is imperative that only qualified and licensed professionals handle this product. Under no circumstances should it be utilized as a drug, agricultural or pesticide product, food additive, or household chemical. Misrepresentation of this product for such purposes is strictly prohibited by law. All content on our website is provided for educational use exclusively. Any form of introduction into the human or animal body is illegal.