No independent test of Simple Peptide's Thymulin yet
- Thymulin generally tests 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 Simple Peptide 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 toolThymulin 1 vial
A nonapeptide thymic hormone that requires bound zinc for its biological activity.
Observed price
We can't read this listing's size (e.g. a multi-size or combo pack), so we can't compare its cost-per-mg against the market. The sticker price above is exact.
- Availability
- In stock
- Checked
- 2 days ago
Hands you to simplepeptide.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.
Simple Peptide
Unclaimed page
1
Lab tests
99.8%
Median purity
56
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 Simple Peptide's Thymulin yet
- Thymulin generally tests 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 Simple Peptide 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 toolUnderstand this compound
What is Thymulin?
Preclinical / animal onlya.k.a. FTS (Facteur Thymique Sérique)A zinc-dependent molecule from the thymus that helps young immune cells mature. Studied in immune aging — and it literally stops working without zinc.
Good to know: Its zinc dependence means measured or administered activity is highly sensitive to zinc status, and no controlled human supplementation trials establish a clinical benefit.
How does Thymulin work?
The science
A zinc-dependent nonapeptide (FTS bound to zinc) produced by thymic epithelial cells that promotes T-cell differentiation and balances Th1/Th2 immune responses; it loses activity without bound zinc.
Mechanism of action from published research — how the molecule behaves, not a claim about any product or any human-use effect.
What is Thymulin researched for?
Studied for immunosenescence and age-related decline in T-cell function.
- Immune & thymicStudied in immune-modulation and thymic-function research.
How far has the research gone?
Preclinical / animal research — well-characterized mechanistically, but human data are largely observational (correlating declining thymulin levels with age), not interventional.
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
UnknownNo independent test on record for this listing.
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.
These certificates are for Thymulin across every maker VialGrade tracks — not necessarily Simple Peptide’s own stock. This listing’s specific evidence is the matrix above.
Independent testing
Independent lab tests on record for Thymulin
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.
| Certificate | Manufacturer | Batch | Purity | Content / dose | Lab | |
|---|---|---|---|---|---|---|
| PeptideGurus | — | See report | — | Janoshik Analytical | Verify |
No test for this vendor — but Thymulin is independently characterized
This vendor doesn't advertise independent testing, and we hold no COA tied to Simple Peptide specifically. We do hold 1 independent certificate for Thymulin 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 Simple Peptide.
- Thymulin (market-wide). 1 independent COA.
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
0.0 % over 30 days
$84.00 → $84.00
Every observation
| Date | Observed |
|---|---|
| $84.00 | |
| $84.00 |
0.0 % over 30 days · 34 checks · $84.00 on Sep 2, 2026 → $84.00 on Sep 30, 2026. Vendor list price before shipping or discounts. Observed, not projected.
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 Thymulin market, price history & lab tests