Compound deep-dives, documentation news, storage and handling guidance, and the latest from our lab — written for researchers and labs.
Testing & Purity
Recent regulatory and standards discussions have reinforced a point that laboratory researchers and quality personnel have long observed: a single chromatographic retention time or…
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Testing & Purity
Understanding a peptide COA is central to interpreting peptide analytical reports after the FDA’s 2026 impurity guidance. This short, lab-focused checklist helps researchers, quality…
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Testing & Purity
Recent industry updates describing expanded batch‑specific third‑party testing and publicly accessible COAs have increased interest in robust peptide COA verification workflows for laboratory research…
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Testing & Purity
In 2026 a vendor announced an 8‑vial random lot testing standard that requires eight vials drawn from each production lot to undergo independent HPLC…
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Testing & Purity
On July 28, 2026 the FDA published revised draft product‑specific guidances (PSGs) for a set of peptide drug products. These documents articulate the agency’s…
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Testing & Purity
Recent regulator and standards updates emphasize that a single chromatographic retention time is insufficient to demonstrate peptide identity. For laboratory researchers working with synthetic…
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Testing & Purity
Peptide COA interpretation is essential for laboratory researchers who require reproducible, well-characterized materials. Recent industry reporting has highlighted a widening verification gap in the…
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Testing & Purity
TL;DR: HPLC retention time and UV purity show chromatographic behavior. For defensible identity claims on COAs, combine HPLC with orthogonal evidence such as HRMS,…
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Testing & Purity
Recent independent investigations have emphasized the importance of rigorous analytical documentation for peptide materials. In 2026 reporting highlighted a notable rate of mislabeled or…
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Testing & Purity
Certificates of Analysis (COAs) are central documents in laboratory research, quality control, and material traceability. This article explains what makes a coa easy to…
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