No independent test of Core Peptides' Thymalin yet
- We hold no independent tests for Thymalin from any maker yet — unknown stays visible.
- Price sits within the normal range for Thymalin — no cheap-fake red flag.
How to verify this yourself
To verify before you buy: ask Core Peptides 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 toolThymalin – 25MG
A peptide fraction extracted from the thymus gland belonging to the class of thymic bioregulators.
Observed price
Median $/mg
$5.71/mg
Range $/mg
$2.63/mg–$6.44/mg
This listing
#5 of 10
mid-market
Real / active mg
—
Compared by cost-per-mg against 10 sized listings of this compound. Real / active mg needs an independent purity test — none on record yet. Purity vs grade
- Availability
- In stock
- Checked
- 10 hours ago
Hands you to corepeptides.com — VialGrade doesn’t sell or take payment
Some vendor links may earn VialGrade a commission. It never changes a grade, a price, or where a listing ranks.
Core Peptides
Unclaimed page
2
Lab tests
99.8%
Median purity
43
Listings
Real listing aggregated from the vendor's public page. Buying happens on their site, never on VialGrade — we take no payment and hold no stock. These are sold for laboratory research use only, not for human consumption; the seller sets their own terms and age limits at checkout.
No independent test of Core Peptides' Thymalin yet
- We hold no independent tests for Thymalin from any maker yet — unknown stays visible.
- Price sits within the normal range for Thymalin — no cheap-fake red flag.
How to verify this yourself
To verify before you buy: ask Core Peptides 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
Every Thymalin listing, cheapest per mg first
Sticker prices hide the size, so listings are ranked by what a milligram actually costs — with independently tested purity where it exists. All 14 are here: the last 4 are listings whose vendor never published a strength we can read, so they have no per-mg figure to sort on.
| # | Vendor | Size | Price | Per mg | Tested purity | Real $/active mg | |
|---|---|---|---|---|---|---|---|
| 1 | Peptide Pros | 50mg total | $132 | $2.63/mg | — | — | View |
| 2 | Simple Peptide | 20mg total | $84 | $4.20/mg | — | — | View |
| 3 | Biotech Peptides | 25mg total | $114 | $4.56/mg | — | — | View |
| 4 | Umbrella Labs | 20mg total | $96 | $4.80/mg | — | — | View |
| 5 | Core Peptides | 25mg total | $138 | $5.52/mg | — | — | View |
| 6 | Ion Peptide | 10mg total | $59 | $5.90/mg | — | — | View |
| 7 | Behemoth Labz | 20mg total | $121 | $6.05/mg | — | — | View |
| 8 | Purerawz | 20mg total | $121 | $6.07/mg | — | — | View |
| 9 | Behemoth LabzUnavailable | 50mg total | $319 | $6.38/mg | — | — | View |
| 10 | Purerawz | 50mg total | $322 | $6.44/mg | — | — | View |
| Listed, but not rankable — no published strength to price per mg | |||||||
| — | Eternal Peptides | 1 vial | $24 | no size published | — | — | View |
| — | Purerawz | 1 vial | $77 | no size published | — | — | View |
| — | Behemoth Labz | 1 vial | $79 | no size published | — | — | View |
| — | Nootropic Source | 1 vial | $139 | no size published | — | — | 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. A vendor shown as Unavailable or Low stock is priced here but not currently buyable.
Understand this compound
What is Thymalin?
Limited human dataAn extract of calf thymus — the gland that trains your immune cells — used in Russia since the 1980s to try to restore immune function after illness or radiation.
Good to know: Most supportive evidence comes from non-blinded Russian-language studies that don't meet Western RCT standards, and independent replication is minimal.
How does Thymalin work?
The science
A polypeptide complex extracted from calf thymus, believed to act via a core dipeptide (Glu-Trp) fragment to restore T-cell-mediated immune function.
Mechanism of action from published research — how the molecule behaves, not a claim about any product or any human-use effect.
What is Thymalin researched for?
Studied for immune restoration after illness, surgery, radiation exposure, and age-related immune decline.
- Immune & thymicStudied in immune-modulation and thymic-function research.
- Longevity & anti-agingStudied in aging, cellular-senescence, and mitochondrial-function research.
How far has the research gone?
Limited human data — approved in the former Soviet Union in 1982 and used clinically in Russia, but large independent Western randomized trials are lacking.
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.
The lab evidence
What we could verify
Each row is a separate question with its own answer — one green row never vouches for the rest.
Identity
PartialThe vendor advertises third-party testing; no independent record confirms it yet.
Measured purity
UnknownNo independent purity measurement on record.
Batch traceability
UnknownNo batch on this listing matches an independent record.
Sterility
Not testedA purity certificate doesn't measure this — no such test on record.
Dose accuracy
UnknownNot something VialGrade measures — no test on record.
testing advertised, but not independently confirmed
This listing advertises testing, yet no independent record in our index references Core Peptides for Thymalin. That doesn't prove the certificate is fake — but until it resolves at the lab, treat the testing claim as unbacked, not verified.
- Vendor claim. Advertises testing.
- Independent confirmation. No record found for Core Peptides. Verify the certificate at the lab before trusting it.
Cross-checks the vendor’s testing claim against independent lab records. Read from the certificate, not re-measured by VialGrade. Purity is not a grade. Never a statement that a product is safe, sterile, or correctly dosed. What “grade” actually means
Price trend
—
Every observation
| Date | Observed |
|---|---|
| $138.00 | |
| $138.00 |
29 checks since Sep 4, 2026. Too short a span for a 30-day change. Latest $138.00 on Oct 2, 2026.
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.
General information, not legal or medical advice. VialGrade sells nothing and encourages no human use.
Same compound
See the full Thymalin market — all 14 vendors, price history & lab tests