ACS Peptide Testing Labs review: published prices, named instruments, a new owner, and what its credentials do and do not say

Quick checklist before deeper review

• Use the published ranges to budget, then ask for the fixed quote the lab says it returns within one business day.
• Ask which accreditation, if any, covers the specific test you are ordering, and for the certificate number.
• Confirm the endotoxin detection limit in writing; the same page gives two figures.
• Ask whether ownership by the new parent company changes reports, methods or contacts.
• Pair purity with identity: the lab itself calls HPLC purity plus LC-MS identity its default panel.

Top-half signal table

What it offers and what it costs

ACS describes itself as an independent analytical laboratory that tests peptides for purity, identity, contaminants, endotoxin, moisture and stability, for research laboratories, biotech firms, compounding pharmacies and suppliers. Its machine-readable facts file says it works business to business only and does not sell peptides, and the about page says it does not manufacture, compound, resell or recommend peptide products and gives no clinical or dosing advice.

Its cost page is the most specific we have seen from a laboratory in this market. It lists a price range for every method and states that every quote is a fixed price, that there are no set-up fees or account minimums, and that turnaround is 9 to 11 business days for every customer with no rush surcharge. Quotes are said to come back within one business day.

The instruments it names

Where many laboratory sites stop at "HPLC and mass spec", ACS names its equipment: a Thermo Q Exactive Plus Orbitrap for LC-MS/MS identity work, an Agilent 7850 ICP-MS for lead, mercury, arsenic and cadmium, an Agilent 7890B/5977B GC-MS for residual solvents, and a Charles River Endosafe nexgen-PTS system for kinetic chromogenic endotoxin testing. The about page adds reverse-phase HPLC with UV/DAD detection and Karl Fischer titration for moisture, and says all work is performed at one facility rather than sent out.

It also says what its reports contain: chromatograms and method parameters "so a third party can re-examine the underlying data", calibration against traceable reference standards with certificate references recorded, and a sample chain of custody from receipt to disposal, with blind submission available. Those are the details that let a buyer judge a certificate on its own evidence; whether a given report carries them is something to check on the document itself.

A change of owner

A press release on the laboratory's own site, dated 28 August 2026, announces that Smithers — a testing, consulting and compliance company founded in 1925 and headquartered in Fairlawn, Ohio — has entered peptide testing by acquiring ACS Laboratory near Tampa. It says the technical team was retained and that ongoing projects continue without interruption, and it is quoted from the president of Smithers' cannabis testing division and the company's chief executive. The release directs readers back to the existing site. Clients who rely on a named contact or a particular report format may want to confirm both after the change.

Credentials: what is claimed, and what is not named

The homepage shows four badges: validated methods "ICH & USP referenced", "ASTM D8558 Peptide Standard", "ASTM F49 Committee Member" and "DEA Registered Controlled Analysis". The FAQ says the laboratory follows Good Laboratory Practice guidelines, follows current Good Manufacturing Practice principles, maintains "certifications relevant to analytical testing" and takes part in proficiency testing. We did not verify the ASTM or DEA statements.

What we did not find, on any page we read, is a named ISO/IEC 17025 accreditation, an accrediting body or a certificate number. The cost page opens by saying peptide testing "at an accredited third-party lab in the US" costs the ranges it lists, which reads as a statement about the market rather than a claim about ACS itself. Following GLP or cGMP principles is different from being inspected or certified against them. With no accreditation scope published, the way to judge a result is the report itself: its chromatograms, method parameters and reference standards.

Where its own figures do not agree

Three small inconsistencies are worth confirming before ordering. The endotoxin page gives the assay's sensitivity as 0.01 EU/mL in some places and 0.005 EU/mL in others. The facts file prices a comprehensive panel at $500–$1,500, while the cost page prices its full contaminant screen at $1,000–$2,000 and a full panel at $800–$2,000. And custom method validation is described against ICH Q2(R1) on the cost page and ICH Q2(R2) in the facts file. None changes what the lab does; each is a reason to get the figure in the written quote.

What changed on this page

The previous version of this review was generated from a template shared with every laboratory review and spoke in general terms about search visibility and documentation. This version records what the laboratory's own pages say on a stated date, including its prices, instruments, ownership change and credential wording. It carries no score and makes no recommendation.

Limits of this page

• We read the laboratory's public pages, including its facts file and press release, on 9 October 2026. We did not send a sample, request a quote or read a report it issued, and we do not test products ourselves.
• The ASTM, DEA, GLP and cGMP statements are reported as the site makes them; we did not verify them.
• We did not search every accreditation body's register. The finding is that the site names no accreditation, not that none exists.
• Everything here is research-context information about a testing service. Nothing on this page is guidance about the use of any compound in humans or animals.
• Medibact is not affiliated with ACS Peptide Testing Labs or Smithers. Names are used only to identify the businesses described.

FAQ