QSC vs Peptide Sciences: Thymosin Alpha-1 Comparison | Purity, Shipping & COA

This page provides a side-by-side comparison of QSC and Peptide Sciences as sources for Thymosin Alpha-1 research. Information about Peptide Sciences is based on publicly available data from their website and is accurate to the best of our knowledge at time of writing.

QSC vs Peptide Sciences: Thymosin Alpha-1 Side-by-Side

Purity & COA Transparency

QSC specifies ≥99% purity for Thymosin Alpha-1, verified by HPLC and mass spectrometry. Every product page includes a Certificate of Analysis independently verifiable via the Janoshik testing portal. 28-aa thymic immunomodulatory peptide with N-terminal acetylation. Acetylation verified by MS — critical quality marker distinguishing Tα1 from des-acetyl impurity with reduced activity.

Peptide Sciences specifies ≥99% purity, tested by HPLC. COA availability: Yes — third-party tested.

Domestic Shipping Coverage

QSC maintains domestic warehouses in USA, EU, UK, Canada, and Australia. Orders ship from the nearest warehouse — no customs, no international transit delays, typical delivery 2–7 days domestic.

Peptide Sciences ships domestically from: USA only. US warehouse only — no domestic EU, UK, AU, CA shipping.

Manufacturer vs Reseller

QSC is the direct SPPS manufacturer of every peptide it sells. Thymosin Alpha-1 is produced in-house — synthesised, purified by preparative HPLC, lyophilised, and verified by mass spectrometry before distribution. Every batch is traceable to QSC’s own production records.

Peptide Sciences sources product from Third-party manufacturer. Manufacturing transparency and batch traceability differ accordingly.

Frequently Asked Questions

Is QSC or Peptide Sciences better for Thymosin Alpha-1?

The best choice depends on your location and requirements. Researchers in EU, UK, Australia, or Canada benefit significantly from QSC’s domestic warehouses in those regions — eliminating customs risk and reducing transit time vs vendors with US-only warehouses. For purity-sensitive quantitative research, QSC’s ≥99% specification with Janoshik-independent COA verification provides a higher and independently confirmable quality standard.

Does Peptide Sciences ship Thymosin Alpha-1 to non-US researchers?

Peptide Sciences ships domestically from USA only. Researchers outside these regions receive international shipments, which may be subject to customs clearance, import duties, and extended transit. QSC maintains domestic Thymosin Alpha-1 inventory in 5 regions to avoid these issues.

How does Peptide Sciences verify Thymosin Alpha-1 purity?

Peptide Sciences uses HPLC with Yes — third-party tested. QSC uses HPLC and mass spectrometry on every batch, with COAs proactively published on each product page and independently verifiable via the Janoshik portal.

Can I get custom synthesis or bulk pricing on Thymosin Alpha-1 from QSC?

Yes. As the direct manufacturer, QSC can accommodate bulk orders and custom synthesis requests for Thymosin Alpha-1. Contact [email protected] with your research requirements.