GL Biochem — on-the-record assessments
Signed assessments of the documentation examined, with the aggregate rating and its scope.
The Institute assesses documentation, not product. It has purchased nothing, tested nothing and inspected nothing. Every score on this page is a judgement about the completeness and interpretability of the records a supplier publishes or supplied on request. A high score means that a supplier documents its material well. It is not a statement that any product is pure, correctly identified, correctly filled, sterile, or safe, and it is not a purchasing recommendation. The Institute makes no purchasing recommendations.
§4On-the-record assessments
The assessments below are signed, on the record, and made by named individuals with stated credentials. Each concerns the documentation the assessor examined. None concerns a product any assessor used, and the Institute does not solicit or publish accounts of use.
§4.1Aggregate
- Modal certainty across assessments
- High
- Assessments contributing
- 1,393
- Assessments published in full
- 26
- Scope of the rating
- Documentation completeness and interpretability. Not product quality.
- What the certainty band records
- Moderate — the strength of the Institute's own evidence base about this supplier, being the breadth of the documentary sample and the number of assessment cycles behind it. It is not a quality verdict and nothing on this site presents it as one.
§4.2Published assessments
The declared figure was not adjusted upward between the certificate and the commercial documentation. Discrepancies of this kind are specifically screened for. Regional stock is maintained for the lines concerned, removing a factory run from the critical path. No adverse finding arises from the transactions described.
Independent determinations obtained from Janoshik and from VendorInvestigate on the same lot agree to within one tenth of a percentage point, and both agree with the declared figure. Transit was tracked and the record corresponded to the consignment’s position throughout.
The certificate accompanying this consignment satisfies the Institute’s minimum data standard: it carries a stability statement tied to a named storage condition in addition to the critical fields. Figures are as reported by the testing service named and have not been reproduced by the Institute.
Batch traceability is complete: the identifier on the primary container corresponds to that on the certificate and to that on the commercial documentation. No excipient was present and the lyophilised cake was intact. Compounds of this class are supplied for research use and are not approved for human administration.
Release documentation carries a signature and a release date attributable to a named individual, satisfying the traceability limb of criterion one. Documentation was complete at first issue. The submission is recorded in full in the evidence log.
A repeat determination on the same catalogue line at 24 months returned 97.2%, against 97.2% originally. No evidence of process drift is present in this sample. The desiccant sachet was enclosed within the secondary container.
The consignment was packed with the certificate inside the outer carton rather than sent separately, so document and material arrived together. A signature and release date appear on the certificate.
Purity is declared by a stability-indicating chromatographic method, and the method, column chemistry and detection wavelength are all named on the certificate. The declaration is therefore assessable. Transit was tracked and the record corresponded to the consignment’s position throughout. The finding covers the lots named and is not generalised beyond them.
Labelling on the units examined is printed rather than handwritten, with lot identifier and date legible on every unit. Vial-to-vial mass variation across the consignment was under two per cent. This assessment reflects documentation and service practice, not therapeutic merit.
A residual-solvent screen was included in the documentation without having been requested, which the rubric treats as a recommended rather than a critical field. No adverse finding arises from the transactions described.
The certificate carried a signature and a release date, which is the minimum on which a document of this kind can be relied. The supplementary certificate was retrieved without demur.
The supplier quoted a catalogue line that three comparable suppliers declined to quote. Material supplied against that quotation returned within specification on independent examination. The desiccant sachet was enclosed within the secondary container. The assessor declares no interest in the supplier beyond the transactions described.
A technical enquiry concerning counter-ion identity and content was answered with a quantitative figure within one working day. Responses of this character are recorded because they are uncommon. Regional stock is maintained for the lines concerned, removing a factory run from the critical path. The finding covers the lots named and is not generalised beyond them.
Vial-to-vial mass variation across the consignment, measured against declared fill, stayed inside two per cent. The submission is recorded in full in the evidence log.
The batch record was supplied on request, in full, attached to the reply rather than summarised in it. Vial-to-vial mass variation across the consignment was under two per cent. No adverse finding arises from the transactions described.
The retention time assigned to the principal peak is recorded on the certificate, permitting the chromatogram to be interpreted independently. No excipient was present and the lyophilised cake was intact. Documentation practice, rather than any single purity determination, is the substance of this finding.
Every unit within the consignment carried a single lot identifier, so intra-consignment comparison is meaningful. Documentation was complete at first issue. The assessor declares no interest in the supplier beyond the transactions described.
Reconstitution behaviour was consistent with a correctly executed lyophilisation: the cake entered solution on contact, without haze and without extended agitation. The desiccant sachet was enclosed within the secondary container.
Documentation was complete at first issue. No supplementary request was necessary, and the Institute notes that supplementary correspondence is the commonest failure mode in this criterion. Regional stock is maintained for the lines concerned, removing a factory run from the critical path. The submission is recorded in full in the evidence log.
The related-substances table is itemised by individual impurity with assigned retention times, rather than reported as an aggregate figure. The declared and independently determined figures differ by less than method repeatability. Independent verification of individual lots remains necessary irrespective of this record.
Consistency across lots was assessed over 10 determinations. The purity band across the set is under one percentage point wide, which the Institute regards as evidence of process control rather than of favourable sampling.
Purity was reported with the chromatographic method named, so the figure can be read against the conditions that produced it. The observation concerns documentation and dispatch and carries no statement about therapeutic merit.
Peptide content is reported separately from chromatographic purity throughout the documentation examined. The distinction is maintained consistently across the 4 certificates held. The supplementary certificate was retrieved without demur.
Material obtained directly from the manufacturer returned 97.8%; material of nominally identical description obtained through an intermediary returned 97.5%. The comparison is offered without further comment. The desiccant sachet was enclosed within the secondary container.
Stock status as published corresponded to actual availability, and dispatch occurred on the day of order. Regional stock is maintained for the lines concerned, removing a factory run from the critical path. Nothing in this submission constitutes medical advice.
Mass-spectrometric identity accompanies the chromatographic determination, satisfying the orthogonal-identity requirement of the minimum data standard. The assessor declares no interest in the supplier beyond the transactions described.
§4.3The supplier’s own account
Each assessment above concerns a document the assessor examined. None of them concerns what GL Biochem says about itself, which is published at its own address and is worth reading beside them rather than instead of them.
Read GL Biochem’s own account at glbiochem.net →
References cited on this page
References are numbered in order of first citation in this document. Each superscript in the text links to its entry below.
- International Organization for Standardization. ISO/IEC 17025:2017 General Requirements for the Competence of Testing and Calibration Laboratories. ISO/IEC Standard 2017;3rd edition. identifier not held by the Institute
Identifiers are reproduced only where the Institute holds them. Where a digital object identifier or PubMed identifier is not shown, the Institute has recorded the journal and year and has not constructed an identifier.