$40
Vendor catalog Vendor flaggedLive data
Availability
In stock
Last checked
51 minutes ago
All compounds0%
Synthetic peptide
Live dataTB-500
Recovery & healingMuscle & performance
A synthetic acetylated peptide corresponding to the active actin-binding region of the naturally occurring protein thymosin beta-4.
TB500Thymosin Beta-4 fragmentTB4 fragment
Observed median price
$70
12
Active listings
6 · 99.5%
Independent lab tests
$40–$620
Observed price range
4
Known aliases
Read from the certificate, not re-measured by VialGrade.
Understand this compound
What is TB-500?
Preclinical / animal onlya.k.a. TB4 Fragment (marketing name)A fragment of thymosin beta-4 studied in recovery, flexibility, and tissue-repair research. Almost always discussed alongside BPC-157.
Recovery & healingMuscle & performance
⚠
Good to know: TB-500 is frequently conflated with thymosin beta-4, which has real human data as an eye-drop formulation — that data does not establish safety or efficacy for injectable TB-500.
How does TB-500 work?
Marketed as a synthetic fragment of thymosin beta-4, intended to mimic that protein's actin-binding, cell-migration-promoting activity in wound and tendon repair.
Mechanism of action from published research — how the molecule behaves, not a claim about any product or any human-use effect.
What is TB-500 researched for?
Studied (as the parent molecule thymosin beta-4, not as TB-500 itself) for wound healing, cardiac tissue repair, and corneal healing.
- Recovery & healingStudied in tissue-repair research — tendon, ligament, muscle, and wound-healing models.
- Muscle & performanceStudied in muscle-growth, repair, and physical-performance research.
How far has the research gone?
Preclinical / animal research — favorable data come almost entirely from animal studies of full-length thymosin beta-4; injectable TB-500 itself has not been tested in human trials.
Where the science stands — an approved drug is not the same as the research-grade material a vendor sells, which is unregulated regardless.
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.
US legal statusBanned in drug-tested sport (WADA/USADA)
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.
Compare by real cost
Cheapest TB-500, 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 | Ez Peptides | 10mg total | $48 | $4.80/mg | 99.9% | $4.81/mgbest value | View |
| 2 | Chameleon Peptides | 100mg total10mg · 10-vial kit each | $620 | $6.20/mg | — | $6.23/mg | View |
| 3 | Bluum Peptides | 10mg total | $69 | $6.90/mg | — | $6.93/mg | View |
| 4 | Felix Chemical Supply | 10mg total | $70 | $7.00/mg | — | $7.03/mg | View |
| 5 | Swiss Chems | 30mg total0.5mg each | $255 | $8.50/mg | — | $8.54/mg | View |
| 6 | Bluum Peptides | 5mg total | $49 | $9.80/mg | — | $9.85/mg | View |
| 7 | Cernum Biosciences | 10mg total | $130 | $13.0/mg | — | $13.1/mg | View |
| 8 | Sports Technology Labs | 5mg total | $67 | $13.4/mg | — | $13.5/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.
Current market
All TB-500 listings
$48
$4.80/mg
-38% vs median/mg
Independent test Independently testedLive data
Availability
In stock
Last checked
36 minutes ago
$49
Vendor catalog Compound: 6 COAsLive data
Availability
In stock
Last checked
2 hours ago
$49
$9.80/mg
+26% vs median/mg
Vendor catalog Compound: 6 COAsLive data
Availability
In stock
Last checked
2 hours ago
$67
$13.4/mg
+73% vs median/mg
Testing unverified Compound: 6 COAsLive data
Availability
In stock
Last checked
2 hours ago
$69
$6.90/mg
-11% vs median/mg
Vendor catalog Compound: 6 COAsLive data
Availability
In stock
Last checked
2 hours ago
$70
$7.00/mg
-10% vs median/mg
Vendor catalog Compound: 6 COAsLive data
Availability
In stock
Last checked
36 minutes ago
$73
Vendor catalog Compound: 6 COAsLive data
Availability
In stock
Last checked
36 minutes ago
$80
Testing unverified Vendor flaggedLive data
Availability
In stock
Last checked
21 minutes ago
$130
$13.0/mg
+68% vs median/mg
Testing unverified Vendor flaggedLive data
Availability
Unavailable
Last checked
21 minutes ago
$255
$8.50/mg
+10% vs median/mg
Vendor catalog Compound: 6 COAsLive data
Availability
In stock
Last checked
2 hours ago
$620
$6.20/mg
-20% vs median/mg
Vendor catalog Compound: 6 COAsLive data
Availability
In stock
Last checked
36 minutes ago
Commonly researched together
Often stacked with TB-500
Compounds the research community frequently discusses alongside TB-500. Not a protocol or a recommendation — a starting point for what to read about next.
BPC-157
Synthetic peptide
One of the most-discussed peptides in tissue-recovery and gut-health research. Preclinical studies have looked at connective-tissue and gastrointestinal models. The classic partner to TB-500.
GHK-Cu
Copper peptide
A copper peptide famous in skincare and hair research for collagen and cosmetic contexts, also discussed for tissue recovery. The 'GLOW' in the popular recovery blend.
Independent testing
TB-500 — independent lab tests
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.
99.9%
highest tested purity
| Certificate | Manufacturer | Batch | Purity | Content / dose | Lab | |
|---|---|---|---|---|---|---|
| https://crystalpeptides.eu/Blend | TB1045Cp | 99.93% | 10.17 mg | Janoshik Analytical Still listed | Verify | |
| EZ Peptides | EZP-TBF1006172026-06 | 99.88% | 11.38 mg; 11.41 mg; 11.36 mg | Janoshik Analytical | Verify | |
| PeptideGurusBlend | — | 99.75% | 41.95/40mg · full | Janoshik Analytical Still listed | Verify | |
| cocerpeptides.com | CS-tb10-0111 | 99.33% | 11.61/10mg · full | Janoshik Analytical Still listed | Verify | |
| www.certapeptides.comBlend | CP-2605-TB55 | 99.17% | 5.51/5mg · full | Janoshik Analytical Still listed | Verify | |
| Alpha BioPharmaBlend | BAZPEMCK | 98.71% | 10.65 mg | Janoshik Analytical Still listed | Verify | |
| Eternal Peptides | EP-260521-TB10 | 99.60% | — | Unverified lab · Kovera Labs | Verify | |
 | Chameleon Peptides | CP-8408241-P | 99.34% | 10.15 mg | Unverified lab · Horizon Analytical | View |
Tested batches
Batch test records for TB-500
The full test history for one batch — who picked the sample, who tested it, and what came back. It describes the vials that were tested, never every vial they sold.
Research notes aren’t product proof
Research summaries describe published literature and market data only. They do not establish the identity, quality, safety, or legal status of any listed physical product.