Follistatin 344: Research Profile, Dosages & Supplier Prices
Follistatin 344 is a growth factor research compound with a molecular weight of ~37.8 kDa and a research half-life of hours to days (isoform-dependent). Follistatin 344 is the full-length splice isoform of follistatin, a secreted glycoprotein best known as a high-affinity binding and neutralizing protein for myostatin (GDF-8) and other TGF-beta family ligands including activins. Myostatin is the body's primary brake on muscle growth, which makes follistatin one of the most studied targets in muscle-wasting and muscle-hypertrophy research.
Research Use Only (RUO). Not for human or veterinary use. Not medical advice.
| Sequence | 344-aa glycoprotein (FST344 splice isoform of follistatin) |
| Formula | Glycoprotein (variable glycosylation) |
| Mol. weight | ~37.8 kDa |
| Half-life | Hours to days (isoform-dependent) |
| Forms sold | Lyophilized powder |
What is Follistatin 344?
Animal studies with follistatin overexpression or gene therapy have produced dramatic increases in muscle mass, and a follistatin gene-therapy approach has entered early human trials for muscular dystrophies. Recombinant FST344 sold by peptide suppliers is used in cell and animal research on myostatin/activin signaling, reproductive biology (it was first isolated from follicular fluid), and metabolic regulation. As a large glycoprotein it is expensive to manufacture properly, so verification of identity and bioactivity is critical.
Mechanism of Action (Research Context)
Binds and neutralizes TGF-beta superfamily ligands - principally myostatin (GDF-8) and activins - preventing their interaction with ActRIIB/ALK receptors and downstream SMAD2/3 signaling. Loss of myostatin signaling releases the brake on muscle satellite cell activity and protein synthesis.
Research Areas
Follistatin 344 Dosages in Research
Recombinant protein research material; animal studies typically use microgram-per-kilogram systemic dosing. Research-context only.
Dosage information is a summary of published laboratory research and is provided for informational purposes only. These compounds are not for human use.
Storage & Handling
Lyophilized: -20C or colder, desiccated. Reconstituted: 2-8C, use promptly; large glycoproteins are fragile - no vigorous agitation, avoid freeze-thaw cycles.
Follistatin 344 Supplier Price Comparison
| Supplier | Product | Price | Score |
|---|---|---|---|
| Home | Core Peptides Follistatin-344 (1mg) 1mg | — | ★ 2.3 |
| Buy Nouveaux Ltd Pharma Steroid Online | FOLLISTATIN 344 | $44.00 | ★ 1.8 |
| One moment, please... | Follistatin 344 | $75.00 | ★ 1.6 |
| Kratos Research Labs | Follistatin 344 | $98.00 | ★ 1.6 |
| Amino USA: Premium & Third | Follistatin 344 1mg 1mg | $110.00 | ★ 2.2 |
| Personalized Supplements & Nutrition | Buy Follistatin-344 1 mg (1 vial) 1mg | $139.99 | ★ 2.3 |
| Peptides Canada | Follistatin 344 1 mg 1mg | $149.99 | ★ 2.1 |
| AXIONIS PEPTIDES – Axionis peptides for sale | Follistatin-344 (1mg) 1mg | $150.00 | ★ 1.9 |
| Anabolic steroids Buy online price from 5 euros in the USA No. 1 Sturoid Store legalsteroidshopusa.com | Folliastatin-344 1 mg ST Biotechnology 1mg | $150.93 | ★ 3.0 |
| No. 1 Steroids Store 1pharmacologyusa.com | Folliastatin-344 1 mg ST Biotechnology 1mg | $150.93 | ★ 3.0 |
| Research Peptides in the USA | Follistatin 344 Peptide | $152.00 | ★ 2.1 |
| National Science Labs, LLC Discover the latest advancement in AI | Follistatin 344 Peptide | $156.00 | ★ 2.1 |
| Home | FST-344 1MG 1MG | $169.99 | ★ 1.9 |
| Azteca Gold Labs – Top notch lab with amazing high products! Tren ace acted really fast and added glycogen to my m | Follistatin 344 1mg 1mg | $175.00 | ★ 2.2 |
| High Purity Research Peptides USA | Follistatin 344 | $175.00 | ★ 2.3 |
| Amino Health Sciences | Follistatin-344 | $189.00 | ★ 1.9 |
| TRT, Weight Loss, Peptide Clinic in Tampa, Channelside | Follistatin 344 | $599.00 | ★ 2.4 |