Peptide Research Blog
Latest articles, guides, and updates.
Labs: 3 Traceability Checks for Peptide COA Interpretation
A traceability first checklist for labs to verify peptide COAs: match lot/date, confirm MS ID and HPLC purity, and verify endotoxin/sterility.
Labs: Semaglutide Impurity Profile, HRAM to 0.005%
Lab guide to semaglutide impurity profiling: HRAM LC MS to 0.005%, chiral workflows for D isomers, plus independent vendor testing and a practical checklist.
10% Impurities in Peptides: Why Research Use Only Means Risk for Labs
Regulation-first guide for labs: what Research Use Only means under FDA and IVDR, the 10% peptide impurity risk, and how to verify vendors with...
28 Days: Peptide Storage Temperature and HPLC Checks for Researchers
Practical storage rules for researchers: when to use −80°C, −20°C, or 2–8°C, how lyophilized versus reconstituted state and sequence affect stability, and...
Peptide Shelf Life for Labs: Keep Lyophilized Powder at −20°C to −80°C
Lab focused peptide shelf life advice: when to store powders at −20°C to −80°C, aliquot reconstituted solutions, and verify purity with HPLC/MS before...
28 Day Rule for Labs: Bacteriostatic Water Storage, Safety & Vendors
Understand unopened vs opened vial timelines, the 28 day in use rule, neonate warnings, storage tips, and why lab testing verifies suppliers.
Composition First: Labs Cut Peptide Aggregation in Synthesis with AFPS
Composition, not sequence order, often drives aggregation in peptide synthesis. Learn AFPS deprotection monitoring, composition screening, and vendor...
Prevent Reconstitution Errors with Peptide Vial Sizes for Labs and Clinics
Choose peptide vial sizes with exact reconstitution math, headspace and stopper checks, FDA/USP anchors, and independent HPLC/MS vendor data to reduce...
3 Must Haves for Third Party Peptide Testing: Labs, Tests, and Proof
Learn three must haves for trustworthy third party peptide testing, which labs and tests prove identity, and how to verify a batch COA.
GLP-1 vs GLP-1/GIP: Evidence and Practical Guidance for Clinicians
Tirzepatide showed a 6.5 percentage point greater mean weight loss vs semaglutide. Read the trial evidence, safety checks, titration advice, and lab...
When FFT Beats Averagine for Peptide Isotopic Patterns in MS for Labs
Peptide isotopic pattern methods for mass spectrometry: FFT/BRAIN exact calculations, Averagine, a 4 step workflow, and lab standards.
5 Arrival Checks That Confirm Lyophilized Peptide Quality for Labs
Five quick on receipt checks to verify lyophilized peptide identity, net peptide content, residual moisture, and excipient safety.
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507 topics covered across the research and testing guides.