Pharmaceutical-grade research compounds. Every batch independently tested. Every vial guaranteed. Domestic US stock ships in 24–48 hours.
All compounds for laboratory research purposes only. Certificate of Analysis and purity documentation included with every order.
Documentation and consistency — not marketing language — are what distinguish a serious research supplier.
Every production lot is sent to an independent laboratory for HPLC purity analysis and mass spectrometry identity confirmation. We do not rely on supplier-provided documentation alone.
Your Certificate of Analysis matches the exact lot number of the compound in your vial. Not a generic COA. Not a sample document. The actual batch your order shipped from.
We maintain a minimum 99% purity threshold across all compounds. Lots that do not meet this standard are not released. Quality is not negotiated based on availability.
Orders ship from US domestic inventory within 24–48 hours. Cold-chain handling is maintained throughout. All shipments arrive in discreet, unmarked packaging with full tracking.
Purity percentages, lot numbers, test methods, and molecular specifications are available for every compound we carry. We publish what others leave out.
Direct access to our support team at support@opseklabs.com. Responses within 2–4 business hours. Questions about documentation, storage, or ordering handled directly.
Each production batch goes through a defined verification process before it is offered for sale. This is not a one-time audit — it applies to every lot we receive.
High-Performance Liquid Chromatography separates and quantifies each compound component. This confirms purity percentage and identifies any impurities present above threshold levels.
MS analysis confirms molecular identity by measuring mass-to-charge ratio. This verifies that the compound is what it claims to be — not a related analogue or degradation product.
Results are recorded against the production lot number. Every vial from that lot carries the same documentation, traceable from testing to delivery.
Compounds are stored at -20°C in controlled conditions from receipt through fulfillment. Cold-chain packaging maintains integrity during transit.
"The COA matched the lot number on the vial. HPLC data was exactly what was listed. Documentation was the deciding factor for us."
"Ordered BPC-157 and Ipamorelin. Arrived in 48 hours, packaging was professional. Documentation included without having to request it."
"Semaglutide and Tirzepatide verified against our own testing. Both matched the listed purity. Consistent across two separate orders."
Understanding quality standards helps researchers make better sourcing decisions.
Understand purity percentages, test methods, batch IDs, and what documentation standards a supplier should meet.
Read Guide →How to evaluate a research peptide supplier. What HPLC and MS testing actually confirm. Red flags to watch for.
Read Guide →Proper storage conditions, reconstitution best practices, cold-chain requirements, and shelf life guidance.
Read Guide →Research-focused comparisons of related compounds. Mechanism differences, receptor profiles, and research considerations.
View Comparisons →No. All products sold by OPSEK Labs are strictly for laboratory research purposes only. They are not intended for human consumption, veterinary use, diagnosis, treatment, or any clinical application. By purchasing, you confirm you are a qualified researcher using these compounds for legitimate scientific research in a controlled setting.
Every production lot undergoes independent HPLC (High-Performance Liquid Chromatography) analysis to confirm purity percentage and identify impurities, and mass spectrometry (MS) to confirm molecular identity. Testing is performed by an independent third-party laboratory, not solely by the manufacturer.
Each COA includes the compound name, lot number, test date, test methods used (HPLC and MS), purity percentage with a chromatogram reference, molecular weight confirmation, appearance description, and release status. The lot number on your COA matches the lot number on your vial.
All compounds are stored at -20°C in controlled-environment facilities from receipt through fulfillment. Orders ship with ice packs and insulated thermal packaging to maintain cold-chain integrity during transit. All external packaging is discreet and unmarked.
Orders placed before 2:00 PM EST on business days ship same day from our US domestic inventory. Standard shipping delivers within 3–5 business days. Priority (2–3 days) and Express (1–2 days) options available at checkout. Free standard shipping on orders over $150.
We accept major credit and debit cards, ACH bank transfer, and cryptocurrency. All card transactions are processed through our secure high-risk payment gateway with full PCI-DSS compliance. Payment information is never stored on our servers.
Lyophilized (freeze-dried) peptides should be stored at -20°C in their original sealed vials. After reconstitution, store at 2–8°C (refrigerated) and use within the timeframe specified on your product page — typically 7–28 days depending on the compound. Avoid repeated freeze-thaw cycles after reconstitution.
Bacteriostatic Water (0.9% benzyl alcohol in sterile water) is the standard reconstitution diluent for most research peptides. We carry bacteriostatic water separately. Always use aseptic technique during reconstitution. Specific reconstitution protocols are available in the academic literature for each compound.
Due to the nature of research compounds, all sales are final unless a product arrives damaged or defective. If you receive a damaged shipment, contact support@opseklabs.com within 7 days with photographic documentation and your order number. We will review and resolve legitimate claims promptly.
In the United States, research peptides may be purchased for legitimate laboratory research purposes. It is the sole responsibility of the purchaser to ensure compliance with all applicable local, state, and federal laws and regulations in their jurisdiction. OPSEK Labs does not provide legal advice. Products are sold strictly for research use only.
Yes. Contact support@opseklabs.com for volume pricing on orders over $500. We work with research institutions, clinical labs, and established research operations. Include your intended quantities and compound list for a quote.