Supplier qualification

Every lot of research material on the BluGen catalog comes through a qualified upstream manufacturer. This page documents how BluGen evaluates, audits, and re-tests those manufacturers. The same workflow runs for every supplier — there are no exceptions for price or speed.

Qualification steps

Documentation review. Manufacturer provides facility certifications, analytical capabilities, sample CoAs from recent lots, QMS overview, and any third-party audit reports.
Identity sample. A sealed sample of the target peptide is ordered against a published lot CoA. The sample is independently re-tested by an external analytical lab.
Receiving inspection. First production lot is inspected on receipt: vial integrity, label match, cake appearance, lot CoA cross-check.
Approval or rejection. A supplier is qualified for a specific peptide and a specific manufacturing site. Other peptides from the same manufacturer require separate qualification.

Ongoing audit

Approved suppliers are re-audited annually. Triggering events for off-cycle audit include: a single failed re-test, a customer-reported identity discrepancy, a change in manufacturing site, or a change in published method.

Redundant supply

Where possible, BluGen qualifies two suppliers per peptide so a sole-source disruption does not affect catalog availability. Where redundancy is not possible (rare modifications, custom sequences), the single-source dependency is recorded and disclosed to institutional procurement on request.

Receiving re-test

Every incoming lot is re-tested at receipt against the manufacturer-supplied CoA. Re-test scope includes HPLC purity, identity by MS, and water content. Lots that fail re-test do not enter inventory and are documented in the supplier file.

Traceability chain

The full chain (manufacturer lot → re-test record → inventory lot → shipped lot) is retained for the advertised stability window plus one year, and is available to qualified institutional buyers on written request.