A family too large for one sentence about follistatin

Published 24 October 2026 · REVIVE LAB UAE Research Desk · 5 min read
The TGF-beta superfamily includes activins, myostatin and the bone morphogenetic proteins among many others. Follistatin binds several of them with different affinities, so what it does in a given system depends on which members are present.

A large and varied family

The superfamily spans ligands with distinct roles across development, tissue maintenance and metabolism. They share structural features and signal through related receptor machinery, which is what makes them a family and also what makes selective tools difficult.

Follistatin binds a subset, with affinities that differ between members. "Follistatin blocks TGF-beta" is therefore too loose to design an experiment around.

Context decides the effect

Because the effect comes from sequestration, it depends on what is available to be sequestered. Two tissues expressing different family members will respond differently to the same addition, and neither response is the compound behaving inconsistently.

What a given system contains therefore determines what the addition can do in it.

Reading claims with that in mind

A claim naming neither target nor system is unfalsifiable as stated. The primary literature is specific about which ligand, which model and what was measured.

Follistatin-344 is supplied with a lot-specific Certificate of Analysis, for laboratory research use only. No dosing or protocol guidance is provided.

What it costs

FormatStrengthPriceAvailability
Follistatin-344 Pack1 mgAED 750In 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.

Frequently asked

A large and varied family?

The superfamily spans ligands with distinct roles across development, tissue maintenance and metabolism. They share structural features and signal through related receptor machinery, which is what makes them a family and also what makes selective tools difficult.

Does REVIVE LAB UAE provide dosing guidance?

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.

How fast is delivery in the UAE?

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.

Follistatin-344 Pack — in stock, dispatched from Dubai
HPLC-verified, lot certificate on every carton, 24-hour delivery nationwide. Browse the catalogue → All peptides UAE

Related reading

Supplied for laboratory research use only. Not for human or veterinary consumption. REVIVE LAB UAE provides no dosing, administration or protocol guidance.