Search peptides — top sellers first
Search peptides — top sellers first
Search peptides — top sellers first
70+ clinical trials. One thymus peptide. Immune research validated.
Made in USA — Synthesized in our cGMP-compliant US facility
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Frequently bought together
Researchers usually add these to complete the protocol.
BAC Water · 3ml
Essential · extras
GHK-CU · 50mg
recovery
Melanotan 2 · 10mg
Tanning
Thymosin Alpha 1 · 10mg
Certificate of analysis
We don't publish a brand-wide spec sheet and call it a “COA.” The certificate you receive references the actual lot number stamped on your vial — with the raw chromatograms attached.
Freedom Diagnostics
Independent analytical lab
Certificate of Analysis
RESULT · PASS
Analytical results
HPLC Chromatogram
Main peak 99.65% · other 0.35%
Alex Johnson
Principal Chemist
Scanned 18×
Know your compound
Thymosin Alpha 1 is a 28-amino-acid peptide the body naturally makes in the thymus, the gland that trains the immune system's T-cells. In the lab it's used to study how immune cells mature and switch on their defenses.
Few research peptides carry this much clinical weight — it's marketed as the drug Zadaxin in over 30 countries and has been the subject of more than 70 trials. That track record is why immune researchers keep coming back to it to probe T-cell function and the body's response to viruses.
For research use only — not for human or veterinary use.
The research
The published findings behind this compound — the headline numbers, in plain terms, each cited to source. Preclinical results are directional (animal / in-vitro) and shown for context, not as therapeutic claims.
Thymosin Alpha 1 has been studied in more than 70 clinical trials probing immune function — a research footprint few peptides can match.
clinical trials
Immune-function trials in the Zadaxin clinical program
In cancer models, the peptide flipped tumor-associated macrophages from the tumor-friendly M2 state toward the tumor-fighting M1 state.
Direction of macrophage repolarization during efferocytosis
Marketed as the drug Zadaxin, the peptide has earned pharmaceutical approval in over 30 countries worldwide.
Each dot ≈ one country
Across immune-research reviews, the peptide is linked to greater T-cell maturation and stronger immune signaling.
Direction of reported T-cell maturation effects
Mechanism
An immune-modulating research peptide studied for tuning the body's defenses.
Studied for supporting T-cell function and the immune system's coordination.
Investigated for the body's response to viruses across infectious-disease models.
Researched for its role in tumor-immunology models.
For research use only. Mechanisms described reflect published research literature.
The process
Synthesized
Produced under controlled manufacturing with documented, repeatable processes.
HPLC purity
An independent lab reports the exact purity of every lot — a number, never a 'passes'.
Mass-spec identity
Molecular weight confirms the exact sequence is what the label says.
COA published
The certificate is posted to the open library, by lot, before the vial ships.
Best sellers
FAQ
Common questions about Thymosin Alpha 1
The COA guarantee
Have any lot independently re-tested. If the results don't match the published certificate, we refund the order in full — no returns, no questions.
Order with coverThird-party tested
An independent, accredited lab — no commercial interest in the result.
A COA on every lot
A lot-specific certificate ships with each vial, archived by batch.
Test it yourself → refund
Re-test any batch at any lab. A mismatch is a full refund.
