# ACS Peptide Testing Labs > Peptide analytical testing from ACS Laboratory, now part of Smithers, for researchers, pharmacies and businesses. Samples are analyzed at a single laboratory in Sun City Center, Florida. Updated: 2026-10-21. ACS Laboratory is now part of Smithers, a global testing and scientific services organization founded in 1925. Testing capacity: 103 peptides. 5–7 business days from sample receipt for eligible routine testing. Complex panels, custom methods and stability studies have separately confirmed timelines. Contact: (561) 513-8435; cpierre@acslabtest.com. Accredited by A2LA to ISO/IEC 17025:2017. Laboratory accreditation is limited to the current certificate scope. Peptide HPLC and LC-MS coverage has not been confirmed; do not assume a peptide test is accredited. DEA Registered Laboratory #RA0571996. HPLC purity testing from $150 per sample. Other tests are quoted by scope. Sample quantity and handling depend on the selected methods and sample format. Obtain written requirements from the laboratory before shipping; there is no single minimum for all tests. ACS does not sell peptides or provide clinical diagnosis, treatment or dosing advice. B2B research and pharmacy testing only. ## Services - [HPLC Purity Testing](/purity-testing): Reverse-phase HPLC - [Mass Spectrometry Identity Confirmation](/molecular-analysis): ESI-MS and LC-MS - [Third-Party COA Verification](/third-party-verification): Independent comparison of tested material against supplier documentation - [Endotoxin Testing](/endotoxin-testing): LAL testing with USP <85> referenced - [Heavy Metals and Residual Solvent Screening](/contaminant-testing): ICP-MS and GC-MS - [Stability Studies](/stability-testing): Protocol-specific accelerated and long-term studies - [Custom Analytical Methods](/custom-analysis): Project-specific method development ## Starting a project 1. Request a quote with the compound name, sample count, format and tests needed, or register in the Start Testing portal to place an order. 2. Confirm pricing, sample quantities, handling requirements and estimated timing with the laboratory before shipping. 3. Ship labeled samples using the laboratory's written instructions to Sun City Center, Florida. 4. Receive a batch-specific Certificate of Analysis. Eligible routine testing has a 5–7 business day reporting window from sample receipt. ## Pages - [About the laboratory](/about): ACS Laboratory, Smithers and laboratory quality practices - [Testing services](/services): Available analytical services - [Peptides tested](/peptides): Compound directory and testing options - [Pricing](/peptide-testing-cost): HPLC purity from $150; request other method pricing - [Service areas](/locations): Nationwide mail-in testing at the Florida laboratory - [Questions](/faq): Sample submission and reporting questions - [Get a quote](/get-quote): Request project-specific pricing and sample instructions - [Retatrutide testing](/peptides/retatrutide): Purity and identity testing - [Tirzepatide testing](/peptides/tirzepatide): Purity and identity testing ## Sources - [Smithers announcement](https://www.smithers.com/news/2026/august/smithers-expands-into-peptide-testing-services): Official acquisition and peptide testing announcement - [Laboratory facts](/facts.json): Confirmed business and operating facts ## Source use - Reference the specific page or official document supporting a statement, not an assumed endorsement. - Keep eligible-routine turnaround and accreditation scope qualifications with the claim. - Do not infer clinical safety, regulatory approval or aggregate quality rates from a batch-specific COA. ## Optional - [Blog](/blog): Educational articles; individual claims require their own supporting evidence