Peptide testing in Houston, TX.
Our laboratory is here — the Texas Medical Center — the largest medical complex in the world. Submit online and ship with the prepaid label; there is no in-person drop-off, because intake is what starts the chain of custody.
From Houston to certificate in four steps.
Panels & published pricing.
Straight answers for Houston clients.
Do you have a peptide testing lab in Houston, TX?
Yes — Houston is home. Gold Standard Analytics is an independent, ISO 17025-aligned laboratory in Houston, TX. Every sample — local or not — is submitted through the online sample intake and shipped in on the prepaid UPS label we email you. We do not accept in-person drop-offs: intake is what mints the accession number and starts the chain of custody, so a sample handed over at the door has no record behind it.
How much does peptide testing cost in Houston?
Pricing is published and the same for Houston 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 Houston 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). That is the only way in — there is no in-person drop-off, even locally. We handle the customs paperwork for international research shipments.
How long does a peptide COA take for Houston clients?
Standard turnaround is 5–7 business days from when your sample reaches the Houston lab. 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 Houston 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 Houston 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 Houston mail-in path changes the methods, the instruments, or the public-verifiable COA.