Thymosin Alpha-1 (Ta1) is a 28-amino-acid thymic peptide supplied by Helix Bio for laboratory and academic research use only. It is not manufactured, labeled, or sold for human consumption, clinical use, or self-administration of any kind, and it is not FDA-approved for any indication in the United States. Researchers working on innate and adaptive immune function, T-cell activity, cytokine regulation, or dendritic cell research use Thymosin Alpha-1 as a reference peptide because it's one of the more extensively studied thymic peptides in the immunology literature. Helix Bio's Thymosin Alpha-1 ships as a lyophilized powder, is verified through HPLC and mass spectrometry, and comes with a certificate of analysis for every batch. If you're comparing Thymosin Alpha-1 suppliers for a research order, the sections below cover specifications, storage guidance, and the published research context most researchers want before ordering.
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Thymosin Alpha-1 is a 28-amino-acid peptide fragment derived from prothymosin alpha, a protein first isolated from thymic tissue. It carries an acetylated N-terminus and has been studied since the 1970s in immunology research, particularly around T-cell maturation, cytokine signaling, and innate immune activation.
Outside the United States, a pharmaceutical version of this peptide is marketed under the brand name Zadaxin and is an approved drug in some countries. Thymosin Alpha-1 is not FDA-approved for any indication in the United States, and Helix Bio's product is sold strictly as a research chemical — not as a pharmaceutical, not as Zadaxin, and not for human use.
Researchers typically request Thymosin Alpha-1 for study designs involving:
Thymosin Alpha-1 from Helix Bio is not sold, marketed, or intended as a drug, supplement, or treatment product, and it is not equivalent to or interchangeable with Zadaxin or any approved pharmaceutical.
When you're comparing Thymosin Alpha-1 suppliers, purity you can verify and consistency between batches are what matter most. Helix Bio tests each Thymosin Alpha-1 lot with HPLC and mass spectrometry, then attaches the certificate of analysis to the order so the numbers aren't just a claim on a website.
The peptide ships lyophilized, which holds up better across transit and short-term storage than a pre-dissolved format. Combined with domestic USA manufacturing and shipping, that means shorter transit times and fewer temperature-exposure risks between production and the lab that uses it.
This product is not intended for individual consumers, self-administration, or any use outside a research setting.
| Field | Detail |
|---|---|
| Product Name | Thymosin Alpha-1 |
| Category | Thymic / Immunomodulatory Research Peptide |
| Sequence | Ac-SDAAVDTSSEITTKDLKEKKEVVEEAEN |
| Molecular Weight | ~3,108 Da |
| Purity | 98%+ (HPLC verified) |
| Appearance | White to off-white lyophilized powder |
| Storage (unreconstituted) | -20°C, protected from light and moisture |
| Storage (reconstituted) | 2-8°C; follow your protocol's stability window |
| Packaging | Sealed, sterile glass vial |
| Research Use | Laboratory / in vitro research only — not for human use; not FDA-approved |
| Manufacturer | Helix Bio |
| Quality | Third-party lab tested, COA per batch |
| Country of Origin | USA |
Thymosin Alpha-1 shows up across several areas of the immunology and infectious-disease literature. This section summarizes what's studied in published research — it does not describe intended uses for Helix Bio's product beyond laboratory research.
A large share of the Thymosin Alpha-1 literature focuses on T-cell maturation and activation, along with its effects on dendritic cells and natural killer cells in research models of innate and adaptive immunity.
Research has examined how Thymosin Alpha-1 affects cytokine production, including work relevant to vaccine adjuvant research and immune response modeling.
Published research has looked at Thymosin Alpha-1 in hepatitis research models and other antiviral research contexts, generally in cell-culture or animal-model systems.
Some research has explored Thymosin Alpha-1 as an adjunct compound in oncology research models and in sepsis or cytokine-storm research models, where immune modulation is a variable of interest.
Thymosin Alpha-1 and Thymosin Beta-4 are both thymic peptides, but they're studied in different research contexts. Thymosin Alpha-1 is primarily examined in immune-modulation research, while Thymosin Beta-4 is more commonly associated with research on cell migration and tissue-repair models. They are structurally distinct peptides and are not interchangeable in a study design.
Helix Bio verifies Thymosin Alpha-1 purity using HPLC (high-performance liquid chromatography) and confirms peptide identity with mass spectrometry. Both methods target 98% or higher purity per batch, and a certificate of analysis is generated for each lot so researchers can check the specific numbers for the vial they receive rather than relying on a general product description.
Standard lab handling practices apply from manufacturing through shipping: peptides are kept lyophilized until they reach the researcher, packaged to limit moisture exposure, and labeled by lot so results can be tied back to a specific batch. If your institution requires documentation beyond the standard COA, reach out to Helix Bio directly, since requirements vary by lab and by study.
General best practices for handling a lyophilized research peptide like Thymosin Alpha-1:
These are general handling notes, not a substitute for your institution's standard operating procedures or safety data sheet guidance.
Thymosin Alpha-1 ships in sealed, sterile vials, packaged to protect the lyophilized peptide during transit. Because Helix Bio manufactures and ships domestically within the USA, transit times are generally shorter than with overseas suppliers, which reduces the window of temperature exposure between production and delivery.
Specific shipping timelines, carrier options, and packaging methods can vary by order — check current shipping details at checkout or contact Helix Bio directly for order-specific questions.
Thymosin Alpha-1 is sold by Helix Bio strictly for laboratory and research use only (RUO). It is not a drug, dietary supplement, or treatment product, and it is not intended for human or veterinary use, ingestion, injection, or any form of self-administration.
Thymosin Alpha-1 is not FDA-approved for any indication in the United States. A pharmaceutical version of this peptide is marketed as Zadaxin in certain countries outside the U.S.; Helix Bio's product is not Zadaxin, is not manufactured as a pharmaceutical, and is not equivalent to or a substitute for any approved drug.
This product has not been evaluated by the FDA. No statement on this page is intended to diagnose, treat, cure, or prevent any disease. Information about research applications, mechanisms, and published studies is provided for educational purposes and reflects findings in third-party scientific literature — it does not describe intended uses of this product outside a qualified research setting.
By purchasing this product, the buyer confirms they are a qualified researcher, laboratory, or institution acquiring it solely for in vitro or other legally permitted research purposes, and agrees to handle it in compliance with applicable federal, state, and local regulations.
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