Verified
Solid product, will reorder
Really impressed with the packaging quality. Everything double-boxed, insulated and clearly labelled. Same day dispatch worked as promised.
Oliver K.Manchester, UK · 24 Mar 2026
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Peptides
Muscle Research
In stockFollistatin 344
1 mg · ≥99% purity
4.9
Myostatin-binding research peptide.
£99.99GBP
£99.99 per vial · Tax calculated at checkout · Free tracked UK & EU shipping over £50
Bundle & saveVolume discount applied automatically
1
We accept
≥99% purity
3rd-party HPLC
CoA per batch
Fast UK shipping
Quality guarantee
Every batch is independently HPLC assayed. Certificate of Analysis available on request.
Every UK order includes — free
- ✓Batch certificate of analysis (HPLC)
- ✓Discreet, unbranded packaging
- ✓Tracked delivery — free on orders over £50
Full refund
if a batch is off-spec
Free reship
if lost or damaged in transit
Same-day dispatch
Mon–Fri, order before 12:00 UK
Research use only
for laboratory work
Analytical data
Specifications, documented.
Identity data cross-checked against PubChem; purity taken from the batch certificate of analysis.
CompoundFollistatin-344
Also known asFST-344
FormLyophilised powder, sealed glass vial
SolubilityBacteriostatic or sterile water
Storage−20 °C lyophilised, protected from light
About this compound
Follistatin-344
Activin / myostatin-binding glycoprotein
Follistatin-344 is the 344-amino-acid precursor isoform of follistatin, a glycoprotein that binds and neutralises activin and myostatin (GDF-8). It is a reference protein in TGF-β-superfamily and muscle-signalling research.
Activin and myostatin binding is studied in vitro for SMAD2/3 signalling inhibition.
Research areas
TGF-β superfamilySMAD2/3 signallingMuscle-signalling models
Research literature
Research notice: supplied strictly as laboratory research material for in-vitro use. Not for human or veterinary use, and not a medicine, food or cosmetic. This page gives identification and quality information only — no usage instructions or medical advice.
Browse this research area
Follistatin 344 is follistatin 344, a myostatin-binding research protein, supplied by MyPeptides for laboratory research use only.
Follistatin 344 is follistatin 344, a myostatin-binding research protein. MyPeptides supplies it as a lyophilised 1 mg vial for in vitro laboratory research, HPLC assayed at ≥99% purity with a signed certificate of analysis on every batch.
Researchers reach for Follistatin 344 in myostatin-inhibition and muscle-tissue research. It is offered strictly for laboratory investigation — no personal-use claims, no dosing guidance, and no framing as a medicine.
The point of buying research grade rather than generic material is documentation. Every Follistatin 344 order carries lot-specific HPLC and mass-spec data, so the compound in your protocol matches the compound named on the paperwork. The 344-residue isoform, distinct from follistatin 315.
Follistatin 344 — frequently asked questions
Straight answers on purity, handling, dispatch and research use.
What is Follistatin 344?
Follistatin 344 is follistatin 344, a myostatin-binding research protein, supplied by MyPeptides as a lyophilised research vial for laboratory research use only.
What is Follistatin 344 used for in research?
In cited literature, Follistatin 344 is studied in myostatin-inhibition and muscle-tissue research. It is not a medicine and is not intended for human or veterinary use.
What purity is MyPeptides Follistatin 344?
Every batch is third-party HPLC assayed at ≥99% purity. A signed certificate of analysis is available on request after checkout.
How is Follistatin 344 reconstituted and stored?
Ships lyophilised in a sealed borosilicate vial. Store at −20 °C; reconstitute with bacteriostatic or sterile water immediately before in vitro use.
Do you ship Follistatin 344 to the UK and EU?
Yes — tracked Royal Mail and DPD dispatch across the UK and EU, with free shipping on orders over £50. Weekday orders placed before 12:00 UK time ship the same day.
Follistatin 344 reviews
Verified feedback from qualified researchers across the UK & EU.
4.8(6 reviews)
Swipe
Verified
Solid product, will reorder
Really impressed with the packaging quality. Everything double-boxed, insulated and clearly labelled. Same day dispatch worked as promised.
Oliver K.Manchester, UK · 24 Mar 2026
Verified
Great documentation
Ordered a bundle to save on shipping - all vials arrived in one insulated pack, labels identical batch, CoA covers the lot. Great value.
Nikos A.Athens, GR · 26 May 2026
Verified
Vials in perfect condition
Site was easy to use, checkout was fast, and the product arrived exactly when they said it would. Straightforward, no drama, high quality.
Chloe D.Lyon, FR · 15 Apr 2026
Verified
Professional service end to end
Third order from MyPeptides. Purity and appearance are consistent across batches. The paperwork is genuinely useful - mass, structure and CAS all included.
Lena P.Amsterdam, NL · 1 May 2026
Very impressed with the CoA
The little details matter - proper cold-chain, tamper-evident seals, and a CoA that actually reads like a lab report and not a marketing sheet.
Jonas F.Copenhagen, DK · 11 Jul 2026
Reference-grade quality
Been using peptides for research for years and MyPeptides is now my go-to. Consistent quality, quick turnaround, real documentation.
Tom C.Bristol, UK · 20 Apr 2026
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