The figure is the residue count of the precursor. FST-344 and FST-315 are products of the same gene, differing through alternative processing, and the difference sits at the C-terminal end.
That is not a cosmetic distinction. The C-terminal region carries a heparin-binding sequence, and whether it is present changes how much of the protein stays associated with cell surfaces rather than remaining in solution.
A form that binds heparan sulfate on the cell surface concentrates where cells are. A form that does not distributes through the medium. Those are different exposures from the same nominal amount of protein, and they can produce different measurements with nothing else changed.
This is why a methods section naming "follistatin" without an isoform has left out something a reader needs. Two laboratories using different isoforms are not running the same experiment.
The carton and the vial are both labelled Follistatin-344. The lot-specific Certificate of Analysis states the measured purity for the batch, and identity is confirmed before release.
Where a published result is being reproduced, check which isoform that work used before ordering — the papers are usually specific, and the difference is not one to assume away.
| Format | Strength | Price | Availability |
|---|---|---|---|
| Follistatin-344 Pack | 1 mg | AED 750 | In stock |
Delivery is AED 40 flat and free on orders over AED 700. Payment is cash on delivery anywhere in the UAE, or USDT (TRC20) in advance, which takes 5% off the order total.
The figure is the residue count of the precursor. FST-344 and FST-315 are products of the same gene, differing through alternative processing, and the difference sits at the C-terminal end.
No. REVIVE LAB UAE supplies research materials and provides no dosing, administration or protocol guidance of any kind. Every product is sold for laboratory research use only and is not for human or veterinary consumption.
Stock is held in Dubai. An order confirmed before 4 PM Dubai time is dispatched the same working day, reaching Dubai and Abu Dhabi the same day and the remaining emirates within 24 hours. Delivery is AED 40 flat and free over AED 700.
Supplied for laboratory research use only. Not for human or veterinary consumption. REVIVE LAB UAE provides no dosing, administration or protocol guidance.