Peptide testing in San Diego, CA.
Serving the Torrey Pines / San Diego biotech mesa — one independent Houston laboratory, every San Diego sample by prepaid overnight mail. No local storefront, no middlemen, no markup.
From San Diego to certificate in four steps.
Panels & published pricing.
Straight answers for San Diego clients.
Do you have a peptide testing lab in San Diego, CA?
We don't operate a physical lab inside San Diego — Gold Standard Analytics is one independent, ISO 17025-aligned laboratory in Houston, TX, and we serve San Diego and the rest of Southern California entirely by mail-in. You submit online, we email a prepaid UPS shipping label, you hand the package to UPS, and the certificate of analysis (COA) comes back to you electronically. Inbound transit from San Diego to our Houston lab runs about 3–4 business days by the prepaid UPS label we email you.
How much does peptide testing cost in San Diego?
Pricing is published and the same for San Diego as everywhere else — no quote calls. A peptide base COA (LC-MS identity + HPLC purity + net peptide content) starts at $189 for standard research peptides and $289 for the GLP-1 class. Safety add-ons are flat (endotoxin $199, sterility $195, heavy metals $169), and there's a bulk discount at 5+ samples. See the peptide service page for the full menu.
How do I send a peptide sample from San Diego for testing?
Start on the submit a sample page — it takes about two minutes. An invoice is issued at submission; once payment clears we email a prepaid UPS waybill with packaging instructions. Ship 5 mg of dry lyophilized peptide (10 mg if you're adding sterility). Inbound transit from San Diego to our Houston lab runs about 3–4 business days by the prepaid UPS label we email you. We handle the customs paperwork for international research shipments.
How long does a peptide COA take for San Diego clients?
Standard turnaround is 5–7 business days from when your sample reaches the Houston lab, plus the 3–4-business-day inbound transit from San Diego. Expedited 48–72-hour service is available on most panels. Every public COA is verifiable by accession number at our COA lookup.
What testing standards and methods do you run on San Diego samples?
Every peptide gets dual-method confirmation: HPLC purity (reversed-phase, UV/DAD at 214 nm) and identity by LC-MS within ±0.1 Da of the theoretical mass, plus net peptide content and TFA / acetate residual. Injectable-grade lots add USP <85> endotoxin (LAL) and USP <71> sterility. We operate to ISO 17025 expectations and GLP data-integrity standards, with weekly instrument calibration.
Can San Diego customers get affordable peptide testing without losing quality?
Yes — our base price bundles identity, purity, and net content on one COA where most labs bill those three separately, so you get a high-quality, dual-method result at a lower all-in price. Nothing about the San Diego mail-in path changes the methods, the instruments, or the public-verifiable COA.