Comparison

Follistatin 315 vs Follistatin 344

Side-by-side attributes from our library comparison data. Read each peptide leaf for dosing math, regulatory status, and citations.

Follistatin 315 leafFollistatin 344 leaf

Follistatin 315 vs. Follistatin 344

AttributeFollistatin 315Follistatin 344
IsoformCirculating (acidic C-tail)Tissue-associated splice
LigandsMyostatin / activins (same class)Myostatin / activins (same class)
SKU realityOften unverified gray-market powderSame problem

Verdict: 315 vs 344 is splice localization, not two mechanisms. Neither is ACE-031.