Follistatin-315 Prices
Also known as FST-315
2 listings from 2 vendors, normalised to one honest price per milligram.
Cheapest per mg
$99.99/mg
At
Umbrella Labs
Vendors
2
Sizes
1mg
Disclosure. Some vendors below are Peptul partners and pay us a commission when you buy through our link. Rows here are ordered by price per milligram only - paying us never moves a vendor up. Current discount codes are shown on the full price board.
Follistatin-315 price per mg by vendor
Prices last collected August 19, 2026.
| Vendor | Size | Price | Per mg | |
|---|---|---|---|---|
| Umbrella LabsVerified COAShips USOut of stock | 1mg | $99.99 | $99.99 | View |
| Behemoth LabzVerified COAShips USOut of stock | 1mg | $172.00 | $172.00 | View |
About Follistatin-315
- What it is
- Follistatin-315 is the mature follistatin protein and the main isoform circulating in blood. An acidic tail lowers its binding to cell-surface heparan sulfate, so it stays soluble rather than tissue-bound like the shorter form. It binds and neutralizes activin and myostatin, and blocking myostatin is the basis of research interest in muscle. It is the same mature protein encoded by the follistatin-344 transcript and has not been approved for any use.
- How it works
- As the main circulating follistatin form, it binds activin and myostatin in blood, preventing them from activating muscle-limiting receptors.
- Researched for
- Myostatin inhibition; activin binding; muscle growth research; circulating follistatin studies
- Half-life
- Not established in humans
- Familiarity
- Advanced
- Research evidence
- Human trials - early or small
- Regulatory status
- Investigational
- Key risk
- No serious risk is documented in the limited human data, though unregulated inhibition of activin and myostatin signaling is a theoretical concern.
For educational and research purposes only. Not medical advice. Always consult a qualified healthcare provider before using any research compound.