Buy 98%+ Purity Bodybuilding Peptide FST-344 Follistatin 344 (1mg / vial) Powder Online
Follistatin 344 Description
Follistatin 344 was initially identified as a follicle-stimulating hormone inhibiting substance found in ovarian follicular fluid. FST is a high-affinity activin binding protein that can act as an activin antagonist. Two alternatively spliced follistatin mRNAs exist, encoding mature FS with 288 amino acid residues (FS-288) and 315 aa residues (FS-315). Natural FS purified from porcine ovaries is primarily a carboxy-terminal truncated form of FS-315 composed of 300 aa residues.
Follistatin 344 quickly gained popularity in the bodybuilding community as a potential supplement to rapidly increase lean tissue mass. Another protein, follistatin-related gene acts on similar pathways as FST regarding its muscle building properties. Increased lean tissue mass could give a bodybuilder an advantage in a competitive setting.
Follistatin 344 Test Report

Follistatin 344 Storage
Lyophilized Follistatin although stable at room temperature for 3 weeks, should be stored desiccated below -18°C. Upon reconstitution FST should be stored at 4°C between 2-7 days and for future use below -18°C. For long term storage it is recommended to add a carrier protein (0.1% HSA or BSA). Please prevent freeze-thaw cycles.
Follistatin 344 Specification:
| Appearance |
White to off white powder |
Consistent |
| Purity(HPLC) |
≥98% |
99.0% |
| Water |
<6.0% |
5.43% |
| Acetic Acid |
3.0-8.0% |
6.45% |
| Trifluoroacetic Acid |
<0.25% |
0.08% |
| Peptide |
≥80% |
88.45% |
| MS |
Consistent |
Consistent |