HPLC purity, LC-MS identity, endotoxin, and heavy metals testing for research peptides. ISO 17025 accreditation pending COAs accepted by partner testing programs and regulatory agencies.
The Testing Panel
Research peptides require purity, identity, and safety testing to verify the compound is what it claims to be and is safe for its intended use. Without independent analytical verification, a vial labeled "BPC-157" could contain a different peptide, a degraded sequence, or a contaminated batch — none of which would be detectable by visual inspection alone.
Our standard peptide testing panel covers four independent analyses that together answer the four critical questions: Is this the right compound? Is it pure? Is it safe to inject? Are there elemental contaminants from synthesis?
Results are issued as an ISO 17025 accreditation pending Certificate of Analysis, which carries evidentiary weight with partner vendor qualification programs, compounding pharmacies, and regulatory bodies.
Reversed-phase separation at 214 nm or 220 nm. Purity reported as % main peak area vs. all detected impurities including truncation products and oxidized forms.
Molecular weight confirmation by electrospray ionization mass spectrometry. Confirms the compound matches the expected sequence — rules out substitution or wrong-compound contamination.
Limulus Amebocyte Lysate (LAL) or recombinant Factor C (rFC) method. Results in EU/mg. Required for injectable compounded peptides under USP <797>.
ICP-MS panel for Pb, As, Cd, and Hg. Raw material synthesis reagents can introduce trace metals — ICP-MS detection at ppt levels confirms absence or quantifies levels vs. USP <232> limits.
Compound Coverage
Our testing covers a wide range of research peptides across therapeutic areas. If the molecular formula or sequence is known, we can test it.
Regulatory Note
BPC-157 and TB-500 were removed from FDA Category 2 classification in April 2026, removing a previously cited barrier to testing. Testing for compounds under active FDA clinical review — such as Retatrutide — requires acknowledgment of their regulatory status as part of the submission process. We will confirm applicable notices at the time of quote.
Deliverables
Every result is issued as an ISO 17025 accreditation pending Certificate of Analysis. The COA documents all analytical results and quality control data required for vendor qualification, compounding batch release, or independent verification.
Tell us your compound, available quantity, and requested tests — we'll confirm the method and quote before you ship anything.
Contact us
Share the compound name or molecular formula, available quantity (typically 5–20 mg for purity + identity), and the tests you need. We confirm the method and return a quote within one business day.
Ship your sample
Lyophilized peptides typically ship at ambient in sealed vials. We provide a chain-of-custody form. Samples are logged in upon arrival at our San Diego facility.
Receive your COA
ISO 17025 accreditation pending results in 9–11 business days for HPLC + LC-MS. Delivered digitally with all chromatographic data, QC records, and the signed COA document.
Who Uses Peptide COAs
ISO 17025 accreditation pending peptide COAs serve a range of customers across commercial, clinical, and research contexts.
Finnrick and similar peptide testing networks require COAs from ISO 17025 accreditation pending partner labs as a condition of vendor approval. Our accreditation (pending PJLA certification) directly satisfies these requirements — no additional qualification step needed. We can provide accreditation scope documentation for your submission packet.
USP <797> sterile compounding standards require endotoxin testing and identity verification for injectable preparations. Our HPLC + LC-MS + endotoxin panel covers the core analytical release requirements. Results formatted for batch records and regulatory inspection readiness.
Academic labs and preclinical research programs need compound characterization data for publication and protocol documentation. ISO 17025 accreditation pending results carry more evidentiary weight than in-house or non-accredited testing for IRB submissions, grant reports, and peer-reviewed manuscripts.
Researchers purchasing from peptide suppliers benefit from independent verification that confirms purity and identity before the compound is used in experiments. A COA from an accredited third-party lab eliminates ambiguity about compound quality and supports reproducibility across studies.
Common Questions
Research peptides are tested for purity by HPLC (High-Performance Liquid Chromatography), which separates the peptide of interest from impurities including truncated sequences, deletion products, oxidized forms, and synthesis byproducts. Purity is expressed as a percentage of the main peak area at the appropriate UV wavelength (typically 214 nm or 220 nm).
HPLC purity measures the percentage of the target compound relative to all detected species — it tells you how much of your sample is the correct peptide. LC-MS identity uses mass spectrometry to confirm the molecular weight of the peptide matches the expected sequence, ruling out wrong-sequence contamination or substitution. Both tests together provide a complete characterization: purity + identity.
ISO 17025 accreditation pending labs can test any peptide where the expected molecular weight and sequence are known. Common research peptides include BPC-157, TB-500 (Thymosin Beta-4), Semaglutide, Tirzepatide, Retatrutide, CJC-1295, Ipamorelin, PT-141, and custom synthesized sequences. The lab needs the molecular formula or sequence to prepare calibration references and validate the method.
For injectable compounded peptides, endotoxin testing is required by USP <797> sterile compounding standards. Endotoxins from gram-negative bacterial contamination can cause fever or septic shock when injected. Endotoxin levels are reported in EU/mg and must meet the limit calculated for the intended dose and route before batch release.
Standard peptide testing (HPLC purity + LC-MS identity) has a turnaround time of 9–11 business days from sample receipt. Endotoxin testing can often be completed in 5–7 business days. Rush turnaround options may be available — contact us to discuss your timeline.
Free Tool
Use our free Peptide Purity Calculator to get a recommended test panel and cost estimate for your compound.
Open the Peptide Calculator →Send us your compound information and available sample quantity — we'll confirm the method, turnaround, and quote within one business day.