THYMOSIN BETA-4 (Tβ4) PEPTIDE LIQUID SPRAY 30ML BOTTLE (500MCG/ML, 15MG TOTAL) 30ML
A naturally occurring 43-amino-acid actin-sequestering protein of the beta-thymosin family.
Observed price
Median $/mg
$9.33/mg
Range $/mg
$8.67/mg–$10.00/mg
This listing
#1 of 2
cheapest/mg
Real / active mg
$8.72/mg
Compared by cost-per-mg against 2 vendor listing of this compound whose size we can read. Real / active mg divides cost-per-mg by measured purity. Read from the certificate, not re-measured by VialGrade.
- Availability
- In stock
- Checked
- 2 hours ago
Hands you to umbrellalabs.is — VialGrade doesn’t sell or take payment
Umbrella Labs
Unclaimed page
2
Lab tests
99.4%
Median purity
120
Listings
Real listing aggregated from the vendor's public page. Buying happens on their site, never on VialGrade — outbound links stay off until the affiliate step is approved.
No independent test of Umbrella Labs' Thymosin Beta-4 yet
- Thymosin Beta-4 generally tests around 99.4% purity across 1 independent certificate — but from other makers, so treat it as a benchmark, not proof of this seller's stock.
- We couldn't place this listing's price — its size isn't readable or the market's too thin — so there's no cheap-fake check here.
How to verify this yourself
To verify before you buy: ask Umbrella Labs for the Janoshik COA for your batch number, then paste it into Verify — VialGrade confirms it's a real, unedited lab record.
Open the Verify toolCompare by real cost
Cheapest Thymosin Beta-4, by price per mg
Vials come in different sizes, so the sticker price lies. This ranks every listing by what a milligram actually costs — with independent test purity where we have it.
| # | Vendor | Size | Price | Per mg | Tested purity | Real $/active mg | |
|---|---|---|---|---|---|---|---|
| 1 | Umbrella Labs | 15mg total30ML each | $130 | $8.67/mg | — | $8.72/mgbest value | View |
| 2 | Umbrella Labs | 15mg total250MCG each | $150 | $10.00/mg | — | $10.1/mg | View |
Real $/active mg divides the price-per-mg by the measured purity — the honest cost of the actual peptide, so a 90%-pure vial isn’t compared as if it were 99%. Too cheap? flags a listing far below the market rate — often underdosing or a fake, not a deal. The crown marks the cheapest non-outlier; best value marks the lowest real cost per active mg.
Understand this compound
What is Thymosin Beta-4?
In clinical trialsa.k.a. Tβ4, RGN-259 (ophthalmic formulation)The full parent protein of TB-500, studied in tissue-repair and regenerative research.
Good to know: Clinical evidence applies specifically to topical eye-drop formulations studied by RegeneRx; it does not establish safety or efficacy for systemic or injectable use.
How does Thymosin Beta-4 work?
A naturally occurring 43-amino-acid actin-binding protein that regulates cell migration, angiogenesis, and inflammation, promoting keratinocyte and fibroblast movement into wound sites.
Mechanism of action from published research — how the molecule behaves, not a claim about any product or any human-use effect.
What is Thymosin Beta-4 researched for?
Studied for corneal wound healing, dry eye disease, and cardiac and dermal tissue repair.
- Recovery & healingStudied in tissue-repair research — tendon, ligament, muscle, and wound-healing models.
- Immune & thymicStudied in immune-modulation and thymic-function research.
How far has the research gone?
In clinical trials — a topical ophthalmic formulation (RGN-259) has completed Phase 2/3 trials for dry eye and neurotrophic keratitis and holds FDA Orphan Drug status; systemic/injectable use remains preclinical.
Where the science stands — an approved drug is not the same as the research-grade material a vendor sells, which is unregulated regardless.
What is Thymosin Beta-4 commonly stacked with?
Compounds the research community frequently discusses alongside Thymosin Beta-4. Not a protocol or a recommendation — a map of what to read about next.
What should I check before buying?
- Independent purity. Look for a third-party COA (Janoshik or MZ) showing a measured purity — not just a number the vendor typed.
- Batch match. The strongest evidence is a certificate for the exact batch you’ll receive, attributed to this vendor — check the cross-verification on the listing.
- Vendor reputation. See how the vendor is talked about in the community before trusting a new name.
Research context only — VialGrade never gives dosing, medical, or human-use guidance.
The lab evidence
What we could verify
Each row answers a different question. Passing the identity test doesn’t mean it’s sterile or correctly dosed — we show each answer separately.
Identity — independent test
UnknownNo independent third-party COA is advertised or on record for this listing.
Measured purity (HPLC)
UnknownNo independent purity figure is on record for this listing.
Batch traceability
UnknownNo specific batch on this listing has been matched to an independent record.
Sterility & endotoxin
Not testedA purity COA does not measure sterility or endotoxins — no such test is on record.
Dose / fill accuracy
UnknownVialGrade does not independently measure vial fill or delivered dose.
These certificates are for Thymosin Beta-4 across every maker VialGrade tracks — not necessarily Umbrella Labs’s own stock. This listing’s specific evidence is the matrix above.
Independent testing
Independent lab tests on record for Thymosin Beta-4
Real, publicly verifiable third-party tests. Purity is read from the certificate itself. A test reflects one lab’s result for one submitted batch — not a guarantee that every vial matches.
How does this data get here?
Every record below is a real certificate of analysis, gathered two ways: from the public verification feeds that independent labs (like Janoshik) publish, and from the certificates vendors post on their own product pages. We open each certificate document and read the measured purity, content, batch, and date directly off it — a scraper can’t read a number printed inside an image, so this is done by machine vision, then recorded here with a link back to the original.
Nothing here is typed in by a vendor or invented by us. Where a certificate is missing, we say so rather than filling the gap.
We re-check the lab feed, too. A “still listed” tag means the certificate is currently public in Janoshik’s database — we re-verify against the live feed and stamp the date. If a cert is later pulled, the tag flips. It’s a freshness check on the same source, not a second independent opinion.
What a certificate does & doesn’t prove
Three different questions. Purity (“how clean?”), identity (“is it the right molecule?”, a mass-spec test), and content (“did I get the labeled mg?”) are separate. A vial can be 99% pure and still be the wrong peptide, or the right peptide underdosed. We flag the measured dose against the label above; underdosing is the most common real fraud.
Who submitted the sample matters. Most of these are vendor-submitted — the seller chose which vial to send, so one good certificate doesn’t prove every batch is the same. The gold standard is a blind test, where a buyer sends a vial they bought as a normal customer. Same label doesn’t prove same product; same batch number doesn’t prove same batch.
99.4%
highest tested purity
| Certificate | Manufacturer | Batch | Purity | Content / dose | Lab | |
|---|---|---|---|---|---|---|
 | Sports Technology Labs | 2025-03-10 | 99.42% | — | MZ Biolabs | View |
No test for this vendor — but Thymosin Beta-4 is independently characterized
This vendor doesn't advertise independent testing, and we hold no COA tied to Umbrella Labs specifically. We do hold 1 independent certificate for Thymosin Beta-4 (median 99.4% purity) from other makers — real market context for what this compound tests at, though not proof of this vendor's product.
- This vendor. No third-party COA on record for Umbrella Labs.
- Thymosin Beta-4 (market-wide). 1 independent COA, median 99.4%.
Cross-checks the vendor’s testing claim against independent lab records. Purity is read from the lab's certificate as issued — VialGrade doesn't re-run the assay or sample the vial. It reflects one lab's result for one submitted batch, not every vial. Never a statement that a product is safe, sterile, or correctly dosed.
Research-use-only — not FDA-approved
Sold “for research use only,” this compound is not FDA-approved for human use and has not been evaluated for safety, purity, or sterility in people. It is generally not a scheduled controlled substance, so buying it as a research chemical is typically not itself a drug crime — but marketing or using it as a drug is not lawful, and it is not a dietary supplement.
Read the full US legal overview →General information, not legal or medical advice. VialGrade sells nothing and encourages no human use.
Same compound
See the full Thymosin Beta-4 market — all 4 vendors, price history & lab tests