Follistatin 344 Pre-Mixed Pen 1mg

Follistatin 344 Pre-Mixed Pen 1mg is a premium-grade research peptide supplied by Direct Anti Peptide at ≥98% purity. Designed for the modern research laboratory, this pre-mixed pen format eliminates manual preparation steps, reduces handling errors, and delivers consistent, reproducible results. Intended exclusively for qualified research professionals, this product supports advanced in vitro and ex vivo investigative studies. For research use only. Not for human or veterinary use. Not for clinical, diagnostic, or consumptive applications.

Product Overview

Follistatin 344 is a naturally occurring glycoprotein isoform that has attracted significant scientific interest due to its role in regulating key biological pathways related to muscle tissue biology, cellular signalling, and growth factor modulation. The pre-mixed pen format offered by Direct Anti Peptide provides researchers with a complete, ready-to-deploy research kit, removing the complexity of independent preparation and enabling more efficient experimental workflows. Whether purchased as a complete pen kit or as a standalone cartridge, this product is engineered to meet the demanding standards of contemporary peptide research.

Peptide Structure & Amino Acid Sequence

Follistatin 344 is a 344 amino acid isoform of the follistatin protein family. It is produced through recombinant expression systems and is structurally characterised by its ability to bind and neutralise members of the TGF-β superfamily, most notably myostatin (GDF-8) and activin. The 344 designation refers to the total number of amino acid residues in this specific isoform, distinguishing it from the shorter Follistatin 288 variant. Its heparin-binding domain and core follistatin domain (FSD) architecture make it a widely studied molecule in muscle biology and tissue regulation research.

Chemical & Physical Characteristics

Follistatin 344 is a monomeric glycoprotein with a molecular weight of approximately 35–45 kDa depending on glycosylation state. It presents as a white to off-white lyophilised powder prior to reconstitution. The pre-mixed cartridge supplied in this product has been prepared under controlled conditions using bacteriostatic water as the reconstitution medium, ensuring compatibility with standard laboratory pen delivery systems. Key physical parameters are verified at the point of manufacture and confirmed prior to dispatch.

Purity & Analytical Verification (HPLC & MS)

Every batch of Follistatin 344 supplied by Direct Anti Peptide is analytically verified to confirm ≥98% purity. Verification is conducted using:

• High-Performance Liquid Chromatography (HPLC): Confirms peptide purity by separating and quantifying individual molecular species within each batch.
• Mass Spectrometry (MS): Validates the molecular identity and confirms correct amino acid composition and molecular weight of the peptide.

Certificates of Analysis (CoA) are available upon request, providing full traceability and analytical transparency for every order placed through Direct Anti Peptide.

Quality Control & Lyophilisation Integrity

Prior to pre-mixing, the Follistatin 344 peptide component undergoes rigorous lyophilisation (freeze-drying) to preserve structural integrity and maximise shelf stability. The lyophilisation process removes residual moisture under vacuum conditions, producing a stable powder that retains biological activity over extended storage periods. Batch-level quality control protocols are applied at every stage of production, including sterility testing of the bacteriostatic water component and integrity verification of the cartridge seal prior to packaging.

Safety, Handling & Laboratory Precautions

This product is intended for use by trained research scientists and laboratory professionals only. The following precautions apply:

• Handle in a controlled laboratory environment in accordance with institutional biosafety guidelines.
• Wear appropriate personal protective equipment (PPE) including gloves, eye protection, and a laboratory coat.
• Avoid direct contact with skin or mucous membranes.
• Keep out of reach of unauthorised personnel.
• Do not use this product outside of a regulated research setting.

Reconstitution, Packaging & Storage

The Follistatin 344 Pre-Mixed Pen 1mg is supplied as a complete research kit. The pre-mixed cartridge is prepared with bacteriostatic water, ready for immediate use in compatible pen delivery systems. The full kit includes:

• 1 x Pre-Mixed Cartridge — containing Follistatin 344 1mg and bacteriostatic water
• 1 x Precision Peptide Cartridge Pen — for accurate, repeatable delivery
• 1 x Protective Pen Carry Case — for secure transport and storage
• 3 x Sterile Pen Needle Tips — single-use, compatible with the supplied pen

Cartridges are also available for individual purchase for researchers who already possess a compatible pen system. Store the product at 2–8°C upon receipt. Protect from light and moisture. Do not freeze pre-mixed cartridges.

Intended Research Use & Market Positioning

Follistatin 344 1mg is positioned as a specialist research reagent for academic institutions, pharmaceutical research organisations, and independent laboratories investigating myostatin inhibition pathways, skeletal muscle biology, TGF-β superfamily signalling, and related fields. Direct Anti Peptide supplies this product exclusively for in vitro and ex vivo research applications. It is not intended for use in animal models, clinical trials, or any consumptive application.

Ordering, Availability & Fulfillment

Researchers can buy Follistatin 344 Pre-Mixed Pen 1mg online directly from Direct Anti Peptide. We offer competitive best-price positioning, fast order processing, and reliable international fulfillment. Orders are dispatched with full cold-chain packaging to maintain product integrity during transit. Bulk ordering options and institutional procurement enquiries are welcomed — contact our team for volume pricing and availability. Order now to secure your supply of this high-demand research peptide.

Legal & Regulatory Disclaimer

For research use only. Not for human or veterinary use. Not for clinical, diagnostic, or consumptive applications. Follistatin 344 Pre-Mixed Pen 1mg is sold exclusively as a laboratory research reagent. Direct Anti Peptide makes no claims regarding therapeutic efficacy, safety for administration, or suitability for use outside of a controlled research environment. All purchasers are responsible for ensuring compliance with applicable local, national, and international regulations governing the acquisition, handling, and use of research peptides. By purchasing this product, the buyer confirms they are a qualified research professional using this material solely for legitimate scientific investigation.