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99.8% — exceeds 99.00% minimum spec
- Batch
- TB-202604-001
- Test date
- April 30, 2026
- Method
- HPLC + MS
- Lab
-
Bioviridian
College Station, TX
Description
TB-500 (Thymosin Beta-4 Fragment) 10 Vial Kit
TB-500 – 5mg (Lyophilized Peptide) 10 Vial Kit – For Research Use Only
TB-500 is a synthetic peptide corresponding to a 43-amino acid sequence of Thymosin Beta-4 (Tβ4), an actin-binding protein naturally distributed across mammalian tissues. It is one of the most widely studied regenerative research peptides in preclinical science, with a substantial body of literature examining its roles in cell migration, angiogenesis, cytoskeletal dynamics, and tissue repair signaling.
Chemical Profile
- Sequence: Ac-Ser-Asp-Lys-Pro-Asp-Met-Ala-Glu-Ile-Glu-Lys-Phe-Asp-Lys-Ser-Lys-Leu-Lys-Lys-Thr-Glu-Thr-Gln-Glu-Lys-Asn-Pro-Leu-Pro-Ser-Lys-Glu-Thr-Ile-Glu-Gln-Glu-Lys-Gln-Ala-Gly-Glu-Ser
- Molecular Formula: C₂₁₂H₃₅₀N₅₆O₇₈S
- Molecular Weight: 4,963 Da
- CAS Number: 77591-33-4
- Form: Lyophilized powder
- Purity: >99% (HPLC verified)
- Quantity: 5mg per vial / 10 vials per kit
- Storage: Store at -20°C long term / 4°C after reconstitution
TB-500 in Preclinical Research
Actin Binding and Cytoskeletal Dynamics TB-500’s primary mechanism of interest involves its interaction with G-actin (globular actin), the monomeric form of actin that regulates filament assembly. By sequestering G-actin, TB-500 influences the G-actin/F-actin balance, which in turn affects cellular processes dependent on cytoskeletal remodeling including cell migration, membrane dynamics, and cytokinesis.
Cell Migration Research One of the most studied properties of TB-500 in preclinical systems is its role in promoting cell migration. Research has examined how TB-500’s actin-modulating activity influences the motility of endothelial cells, keratinocytes, and fibroblasts — cell types central to tissue regeneration processes.
Angiogenesis Research TB-500 has been studied in the context of angiogenesis, the formation of new blood vessels from pre-existing vasculature. Preclinical models suggest it may influence VEGF-related transcriptional programs and endothelial cell behavior relevant to vascular repair and tissue perfusion research.
Tissue Repair and Wound Healing Models Multiple preclinical studies have examined TB-500 in wound healing models, investigating its effects on repair timelines, cellular recruitment, and extracellular matrix dynamics. A 2024 study identified TB-500 metabolites — particularly Ac-LKKTE — as potentially contributing to observed wound healing activity in vitro.
Inflammatory Signaling Research Preclinical research has investigated TB-500 in the context of inflammatory pathway modulation, examining its interactions with oxidative stress signaling and innate pathway nodes under experimentally defined stress conditions.
Cardiac and Vascular Research Emerging preclinical literature has studied TB-500 in cardiac tissue models, examining its potential interactions with cardiomyocyte survival signaling and vascular integrity mechanisms following experimental injury.
TB-500 vs BPC-157: Research Distinctions
TB-500 and BPC-157 are frequently studied together due to their complementary preclinical research profiles, but they have distinct molecular mechanisms:
| TB-500 | BPC-157 | |
|---|---|---|
| Type | Thymosin Beta-4 fragment | Gastric pentadecapeptide |
| Size | 43 amino acids | 15 amino acids |
| Primary Mechanism | Actin binding / G-actin sequestration | NO system / VEGF modulation |
| Key Research Area | Cell migration, cytoskeletal dynamics | Tissue repair, GI mucosal research |
Both are available individually or as the Wolverine Research Combo — BPC-157 and TB-500 bundled together for researchers studying complementary repair pathways.
Quality and Testing Standards
- HPLC Analysis — Confirms >99% purity
- Mass Spectrometry — Confirms correct peptide sequence and molecular identity
- Batch-Specific COA — Certificate of Analysis included with every order
- Third-Party Verified — Independent laboratory testing on every production run
Frequently Asked Questions
What is TB-500? TB-500 is a synthetic peptide corresponding to the active region of Thymosin Beta-4, an actin-binding protein studied for its roles in cell migration, angiogenesis, and tissue repair mechanisms in preclinical models.
What purity is Peak Lab Peptides TB-500? Our TB-500 is HPLC verified to >99% purity with mass spectrometry identity confirmation. Every batch includes a third-party Certificate of Analysis.
Is TB-500 the same as Thymosin Beta-4? TB-500 corresponds to a specific 43-amino acid sequence of Thymosin Beta-4 (Tβ4). It is a synthetic analog used in research to study the biological activity associated with the Tβ4 actin-binding domain.
How should TB-500 be stored? Store lyophilized TB-500 at -20°C for long-term stability. After reconstitution with bacteriostatic water, store at 4°C and use within 28 days.
What is the difference between TB-500 and BPC-157? TB-500 is primarily studied for actin-binding dynamics and cell migration mechanisms. BPC-157 is primarily studied for NO system modulation and VEGF signaling. Both are available as the Wolverine Research Combo for researchers studying complementary pathways.
For laboratory research use only. Not for human or veterinary use, consumption, or medical application.
Fast, reliable shipping
We offer fast, reliable shipping through UPS and USPS.
Shipping Options
UPS shipping options include:
- Next Day Air
- 2nd Day Air
- Ground
Order Processing
- Orders ship Monday through Firday.
- Orders placed before 6:00 PM EST / 3:00 PM PST are shipped the same day.
- Orders placed after the daily cutoff or on holidays will be processed on the next available shipping day.
Puerto Rico, Hawaii & Alaska
- Orders shipping to these destinations are sent via USPS unless alternative arrangements have been made in advance.
- Need a different shipping method? Contact us before placing your order so we can discuss available options.
Order Tracking
- Once your order has shipped, you'll receive a shipping confirmation email with tracking information so you can monitor your delivery.
- Orders totaling $200 or more qualify for FREE UPS 2nd Day Air shipping within the continental United States.
- Free 2nd Day Air shipping does not apply to orders shipping to Puerto Rico, Hawaii, or Alaska.
Handled correctly, stability holds
All peptides are supplied as sterile, lyophilized powder and are stable when handled correctly.
Store away from light
-20°C long-term
2-8°C
Sealed lyophilized vials are heat-stable; refrigerating or freezing sealed vials is optional. 2-8°C applies to reconstituted solutions.
Frequently Asked Questions
PRODUCT & PURITY
This product is offered for laboratory and research use only. It is not intended for human consumption, medical use, therapeutic use, or veterinary use.
Yes, all of our products are sterile and sealed with a sterility plug and safety cap.
Our products undergo quality control internally at our lab and then 3rd party tested at Bioviridian (at their Texas facility) prior to shipment. All of our COA's are then posted on our site immediately upon receipt.
99% or higher. Period. The expected purity is listed on the individual product page or Certificate of Analysis, when available.
No. We are a manufacturing company and because these products are sold for research purposes only, we do not provide dosing, administration, or medical-use guidance.
Unless specifically stated otherwise, these products are not approved by the U.S. Food and Drug Administration for therapeutic or diagnostic use.
STORAGE & STABILITY
As a lyophilized powder, peptides are stable. Delays in shipments up to 7 days will have zero to minimal impact on efficacy of peptides. Most precautionary efforts must be made to maintain temperature consistency once reconstituted.
Store the product according to the storage recommendations provided on the label or accompanying documentation in your shipment. Proper storage helps maintain product integrity during its shelf life. Most peptides have an expiration date of 2 years if kept unreconstituted (lyophilized powder).
SHIPPING
Shipping times vary based on your location and the shipping method selected at checkout. We offer shipping options between 1 and 5 days.
No.
Once your order is processed, you will receive a shipping confirmation email with tracking information.
ORDERS
Each order includes the peptide vial as described on the product page above.
We accept all forms of credit cards and Zelle.
If your order has not yet been processed for shipment, we may be able to make changes. Please contact customer support as soon as possible after placing your order.
If your order arrives damaged or incorrect, contact our customer support team promptly at support@peaklabpeptides.com with your order number and photos of the package and product so we can assist you.
For the safety of our researchers and integrity of our products we can not accept returns whatsoever.
SUPPORT
If you have questions about your order or a product, please reach out through our customer support page or contact us at support@peaklabpeptides.com or call/text 605-524-2800.
Purity you can verify
TESTED
VERIFICATION
Peak Lab Peptides maintains quality-control processes and routinely performs third-party testing to support purity and identity verification. COAs are available upon request for applicable batches. Documentation may vary depending on production timelines.
AVAILABILITY
We aim to make batch-level documentation available whenever possible. Our goal is to expand COA access across the full catalog as production capacity grows.
All products are for laboratory research use only and are not intended for human consumption.
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KLOW is an advanced 4-in-1 research peptide blend combining 80mg of regenerative and anti-inflammatory compounds studied for their potential in tissue repair signaling, immune modulation, and cellular recovery mechanisms in controlled laboratory environments. Each component contributes a distinct and complementary mechanism of action, making KLOW a subject of interest in multi-pathway research models.
Active Ingredients (Per Vial):
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TB-500 – 10mg A synthetic fragment of Thymosin Beta-4 studied for its interaction with G-actin sequestration, angiogenesis pathway activity, and cell migration mechanisms in preclinical research.
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Product Details:
- Total Peptide Content: 80mg per vial
- Form: Lyophilized powder
- Purity: >99%
- Quantity: 10 vials per kit
- Storage: Store at -4°F (-20°C). After reconstitution, refrigerate at 36–46°F (2–8°C) and use within 30 days.
- Grade: For research purposes only. Not for human consumption, therapeutic, or diagnostic use.
Potential Research Applications:
- Multi-peptide synergy and complementary pathway mechanism studies
- Cellular regeneration signaling and extracellular matrix research
- Inflammatory pathway modulation and immune regulation models
- Angiogenesis, cell migration, and tissue repair signaling investigations
For laboratory research only. This product is not intended to diagnose, treat, cure, or prevent any disease.
KLOW Blend 80mg – GHK-Cu, TB-500, BPC-157, KPV
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KLOW is an advanced 4-in-1 research peptide blend combining 80mg of compounds studied for their potential in tissue repair signaling, immune modulation, and cellular recovery mechanisms in controlled laboratory environments. Each component contributes a distinct and complementary mechanism of action, making KLOW a subject of interest in multi-pathway research models.
Active Ingredients (Per Vial):
GHK-Cu – 50mg A copper-binding tripeptide studied for its role in collagen synthesis, cellular regeneration signaling, and extracellular matrix remodeling in laboratory research models.
TB-500 – 10mg A synthetic fragment of Thymosin Beta-4 studied for its interaction with G-actin sequestration, angiogenesis pathway activity, and cell migration mechanisms in preclinical research.
BPC-157 – 10mg A synthetic pentadecapeptide derived from a gastric protein, studied for its role in tissue repair signaling, NO system modulation, and VEGF pathway activity in controlled research environments.
KPV – 10mg A naturally occurring tripeptide fragment studied for its role in inflammatory signaling pathway modulation and immune regulation mechanisms across multiple tissue types.
Product Details:
- Total Peptide Content: 80mg per vial
- Form: Lyophilized powder
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- Grade: For research purposes only. Not for human consumption, therapeutic, or diagnostic use.
Potential Research Applications:
- Multi-peptide synergy and complementary pathway mechanism studies
- Cellular regeneration signaling and extracellular matrix research
- Inflammatory pathway modulation and immune regulation models
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Peptide Storage Case (3ml x 6) — Hard Shell Compact Organizer
A compact solution for organizing and protecting your research materials.
This hard shell peptide storage case is designed to securely hold up to 6 standard 3ml vials, with a precision-fit interior that keeps each vial stable and separated.
Smaller and more portable than our full-size case, this version is ideal for streamlined setups, travel, or keeping frequently used materials organized.
Key Features:
- Custom-fit layout: Holds 6 × 3ml vials
- Hard shell exterior: Durable, impact-resistant protection
- Secure closure: Keeps contents safely contained
- Precision interior insert: Reduces movement and vibration
- Compact & portable: Perfect for minimal setups or travel
Designed for clean organization and reliable protection in any research environment.
Important:
- For research use only. Not for human consumption.
- Vials not included
Peptide Storage Case (3ml x 8, 10ml x 1) — Hard Shell Protective Organizer
Keep your research materials organized, protected, and ready for use.
This hard shell peptide storage case is designed to securely hold up to 8 standard 3ml vials and 1 larger 10ml vial, with a precision-fit interior that keeps everything in place during transport or storage.
The compact, durable design makes it ideal for both at-home organization and on-the-go use, while the structured interior prevents movement, tipping, or contact between vials.
Key Features:
- Custom-fit layout: Holds 8 × 3ml vials + 1 × 10ml vial
- Hard shell exterior: Durable, impact-resistant protection
- Secure closure: Keeps contents safely contained
- Precision interior insert: Minimizes movement and vibration
- Compact & travel-friendly: Easy to store or carry
Built for reliability and clean organization, this case helps maintain a professional and efficient research setup.
Important:
- For research use only. Not for human consumption.
- Vials not included
