No independent test of Peptide Pros' Follistatin 344 yet
- We hold no independent tests for Follistatin 344 from any maker yet — unknown stays visible.
- Price sits within the normal range for Follistatin 344 — no cheap-fake red flag.
How to verify this yourself
To verify before you buy: ask Peptide Pros 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 toolFollistatin 344 1mg 1mg
A recombinant form of the human follistatin protein (344-amino-acid isoform) that binds and neutralizes activin and myostatin.
Observed price
Median $/mg
$140.0/mg
Range $/mg
$88.0/mg–$185.7/mg
This listing
#4 of 9
mid-market
Real / active mg
—
Compared by cost-per-mg against 9 sized listings of this compound. Real / active mg needs an independent purity test — none on record yet. Purity vs grade
- Availability
- Unavailable
- Checked
- 11 hours ago
Hands you to peptidepros.net — 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.
Peptide Pros
Unclaimed page
3
Lab tests
99.9%
Median purity
34
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 Peptide Pros' Follistatin 344 yet
- We hold no independent tests for Follistatin 344 from any maker yet — unknown stays visible.
- Price sits within the normal range for Follistatin 344 — no cheap-fake red flag.
How to verify this yourself
To verify before you buy: ask Peptide Pros 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 Follistatin 344 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 11 are here: the last 2 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 | Modern AminosUnavailable | 1mg total | $88 | $88.0/mg | — | — | View |
| 2 | Umbrella LabsUnavailable | 1mg total | $100 | $100.0/mg | — | — | View |
| 3 | Core PeptidesUnavailable | 1mg total | $138 | $138.0/mg | — | — | View |
| 4 | Peptide ProsUnavailable | 1mg total | $139 | $139.0/mg | — | — | View |
| 5 | Swiss Chems | 1mg total | $140 | $140.0/mg | — | — | View |
| 6 | Swiss Chems | 10mg totalKIT (10 vials) each | $1,400 | $140.0/mg | — | — | View |
| 7 | Biotech PeptidesUnavailable | 1mg total | $162 | $162.0/mg | — | — | View |
| 8 | PurerawzUnavailable | 1mg total | $164 | $164.0/mg | — | — | View |
| 9 | Purerawz | 1mg total | $186 | $185.7/mg | — | — | View |
| Listed, but not rankable — no published strength to price per mg | |||||||
| — | PurerawzUnavailable | 1 vial | $132 | no size published | — | — | View |
| — | Behemoth LabzUnavailable | 1 vial | $143 | 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 Follistatin 344?
In clinical trialsa.k.a. FS-344A protein that blocks myostatin — the body's natural 'stop growing muscle' signal. Studied for muscle-wasting diseases, mostly using gene therapy rather than the injectable sold online.
Good to know: Most human evidence comes from gene-therapy delivery, not the standalone injectable peptide sold in research contexts; myostatin/activin blockade also raises theoretical cardiac and reproductive safety questions.
How does Follistatin 344 work?
The science
A glycoprotein that binds and neutralizes myostatin (GDF-8) and activin A, preventing them from engaging ActRIIB receptors and blocking the SMAD2/3 signaling that normally suppresses muscle growth.
Mechanism of action from published research — how the molecule behaves, not a claim about any product or any human-use effect.
What is Follistatin 344 researched for?
Studied for muscle hypertrophy and muscle-wasting diseases (e.g., inclusion body myositis, Becker muscular dystrophy), primarily via gene-therapy delivery.
- Muscle & performanceStudied in muscle-growth, repair, and physical-performance research.
How far has the research gone?
In clinical trials (gene-therapy form); early-phase human trials exist for inclusion body myositis/muscular dystrophy, but the injectable FS-344 protein sold in research contexts lacks human trial data of its own.
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.
No third-party testing to cross-check
This listing doesn't advertise independent lab testing, and we don't hold an independent record for Peptide Pros's Follistatin 344. Absence of a certificate isn't proof of anything — but there's nothing here to verify.
- Independent testing. No third-party COA advertised or on record.
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
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Not available when last checked (Oct 2, 2026). Last observed price $139.00 on Aug 5, 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 Follistatin 344 market — all 11 vendors, price history & lab tests