Blank samples in analytical testing
Distinguish solvent, reagent, procedural and matrix blanks so a clean control is not taken to answer a question it never tested.
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Reference material traceability in peptide assays
Follow the documented chain behind an assigned peptide reference value, and distinguish that chain from a supplier name or instrument calibration label.
Read the article →Interlaboratory comparison of peptide results
Compare peptide measurements across laboratories by aligning samples, quantities and methods before interpreting differences or apparent agreement.
Read the article →Method transfer between analytical laboratories
Understand the evidence that a receiving laboratory can perform an established assay, including procedural knowledge, equipment differences and predefined comparisons.
Read the article →Pass, conform and numeric results on certificates
Read qualitative conclusions and numerical results without assuming a passing label discloses the measured value or covers every attribute.
Read the article →How to check who issued a certificate
Distinguish the seller, submitting customer, testing laboratory and report issuer before seeking confirmation of an analytical document.
Read the article →Certificate verification links and QR codes
Evaluate where a verification code leads and which document fields it confirms, rather than treating the presence of a code as proof.
Read the article →What a laboratory report number is used for
Use report identifiers to locate and discuss a document while keeping them separate from sample, lot, method and revision numbers.
Read the article →Accreditation claims on testing documents
Check an accreditation claim against the issuing body’s official record and scope, rather than assuming a logo covers every test.
Read the article →Laboratory signatures and report authorisation
Read sign-off fields and digital signatures as evidence about report release and document integrity without inventing reviewer qualifications.
Read the article →Revised certificates and superseded results
Track which report version is current and why a change was made without confusing a revised document with new analytical testing.
Read the article →Redacted certificates: what remains verifiable?
Assess the effect of hidden report fields without assuming either that redaction proves misconduct or that the remaining result is sufficient.
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