- What exactly is Follistatin?
- Follistatin is supplied as Recombinant human follistatin-344 (FST-344), expressed protein. Because it is not a single chemical entity, it has no individual CAS registry number; identity and content are established per batch and recorded on the certificate of analysis that accompanies the material.
- How is the purity of Follistatin verified?
- Purity is determined by high-performance liquid chromatography, with identity confirmed by mass spectrometry. The stated figure for this item is 98.8%. Verification is per batch rather than per product line, which is why the lot number on the vial and the lot number on the certificate of analysis have to match — a certificate that is not batch-specific documents nothing about the vial in front of you.
- Is Follistatin available from a pharmacy, and what is the pharmacy price?
- It is not, and there is none. Follistatin is not an authorised medicinal product in the EU, the UK or the US, so no pharmacy dispenses it and no pharmacy price exists for it. It is supplied here strictly as a laboratory reference material for in-vitro research, not for human or veterinary use, and no prescription is issued or implied.
- How should Follistatin be stored?
- Store as received: Refrigerate 2–8 °C. Lyophilised material is stable far longer than material in solution, so it is kept sealed and dry until it is prepared for laboratory work; the recommended diluent for this item is Bacteriostatic water. Protect from light and from repeated temperature cycling, and record the date the vial was opened.
- Do you ship Follistatin within Europe?
- Yes. Orders are dispatched from within Europe with tracked delivery and plain, unbranded outer packaging, which is what keeps transit times short for EU destinations. Material is labelled for laboratory research use. Delivery windows and destinations are listed on the shipping page.
