Peptide testing in the USA: labs by state, what each one tests and how to check its reports

US peptide testing labs at a glance

Our September 2026 scan found more than 20 US labs that take peptide samples from buyers or sellers. The table lists 15 of them, with what each lab’s own site or sample report showed. “Not published” means we found no figure on the lab’s pages. It does not mean the lab is slow.

Lab (city, state)	Identity method	Safety tests listed	Published turnaround	How you check a report
Krause Analytical (Austin, TX)	HPLC-MS	Endotoxin (LAL), USP <71> sterility, residual solvents	Not published	Upload form; the lab replies by email
MDx BioAnalytical (College Station, TX)	HPLC-DAD with triple-quad MS	Endotoxin, sterility	Not published	COA search by code
Bioviridian (College Station, TX)	LC-MS, MALDI-MS	Endotoxin, USP <71> sterility	3–5 business days (under 20 samples)	COA number lookup
BioRegen (no address published)	UPLC-MS	Endotoxin (kinetic chromogenic LAL)	Not published	COA number and key
BTLabs (West Palm Beach, FL)	HPLC, LC-MS, FT-IR	Sterility, endotoxin, microbial limits	Not published	Client portal; no public lookup
ACS Peptide Testing Labs (Sun City Center, FL)	LC-MS	Endotoxin (LAL), residual solvents, water (Karl Fischer)	9–11 business days	No public lookup found
PharmLabs (San Diego, CA)	HPLC only, no mass spectrometry	Endotoxin, microbial count (TAMC, TYMC) listed as sterility, residual solvents	3–5 business days (potency and purity)	QR code on the report
ILS Laboratories (San Diego, CA)	Retention-time match; LC-MS as an add-on	Endotoxin, rapid sterility screen (DNA microarray)	About 1 week	QR code and access code
Accumark Labs (Anaheim, CA)	HPLC retention time	Endotoxin, PCR screen, USP <71> sterility	48–72 hours after acceptance	Signed report link
Ethos Analytics (Phoenix, AZ)	Retention time (USP <621>)	Endotoxin (gel clot), USP <61>/<62> microbial panel	Not published	Lookup by company and sample ID
MZ Biolabs (Tucson, AZ)	Accurate mass (QTOF MS)	Endotoxin (USP <85>)	Not published	QR code on 2026 reports; no lookup page
Vanguard Laboratory (Olympia, WA)	HPLC-UV retention time	Endotoxin, bioburden (USP <61>), USP <71> sterility option, residual solvents, TFA	Confirmed per order	Search hub for reports the client made public
Freedom Diagnostics (Franklin, TN)	LC-MS	Endotoxin (LAL), PCR screen for microbial DNA	Average 1–3 business days	Public lookup by company name or search code
TrustPointe Analytics (Dorr, MI)	HPLC-UV retention time and UV spectrum	USP <71> sterility, endotoxin (USP <85>), USP <61>, water (Karl Fischer)	3–5 business days	QR code and key
Chromate (Hudson, NH)	HPLC	Sterility (membrane filtration “per USP <71>”), endotoxin (kinetic chromogenic LAL)	Not quantified	Job number and access code

Peptide testing by state

People search for a lab in their own state, but every lab above takes samples by mail. A local lab mainly saves transit time. If your state is missing, pick on method and verification instead.

• Texas: Krause Analytical in Austin; MDx BioAnalytical and Bioviridian in College Station. None of the labs we found lists an address in Houston or Dallas.
• Florida (Miami, Orlando, Tampa): BTLabs in West Palm Beach and ACS near Tampa. Colmaric Analyticals in St. Petersburg and Accurate Test Lab in Fort Lauderdale also list peptide HPLC testing.
• California (San Diego, Orange County): PharmLabs and ILS in San Diego, Accumark in Anaheim.
• Arizona: Ethos Analytics in Phoenix, MZ Biolabs in Tucson.
• Washington State: Vanguard Laboratory in Olympia.
• Tennessee (Nashville): Freedom Diagnostics in Franklin.
• Michigan and New Hampshire: TrustPointe in Dorr, Chromate in Hudson.
• New York: Ichor Life Sciences in Syracuse tests peptides as a Finnrick partner lab; its own site has no peptide-testing offer.

Four things that separate US labs

Identity: mass or retention time

A retention-time match shows that a peak left the HPLC column when the reference standard did. Some different peptides leave the column at nearly the same time. ACS makes the point on its own site: retention time alone “can be matched by a similar peptide.” Labs that read the mass (MZ Biolabs, Freedom, Krause, ACS, MDx, Bioviridian, BioRegen) check that the molecule has the expected mass. Vanguard, Ethos, TrustPointe and Accumark rely on retention time, Chromate lists HPLC as its default method, PharmLabs lists HPLC without mass spectrometry, and ILS sells LC-MS identity as an add-on. Our LC-MS identity guide explains the difference, and the identity test page shows what a mass result looks like.

Sterility: three tests share one word

The compendial USP <71> test incubates the sample for at least 14 days and looks for growth. Krause, TrustPointe, Bioviridian and Accumark list it, and Vanguard offers it as an option. Chromate lists membrane-filtration sterility “per USP <71>” but publishes no incubation time; ask whether you will get the full 14-day test. Freedom and Accumark also sell PCR screens for microbial DNA, ILS sells a DNA microarray screen, and PharmLabs reports a microbial count in 3 to 5 business days. These answer narrower questions in less time, and none of them is the 14-day sterility test. See which labs run a real 14-day sterility test.

Endotoxin: ask for the number

Most labs here list a LAL endotoxin test, in different formats: kinetic chromogenic (Chromate, BioRegen, ILS) and gel clot (Ethos). BioRegen names its reader, an Endosafe nexgen-PTS, and ILS states results in EU/mg. Whichever lab you use, ask for a result in EU per vial or EU per mg, not only “pass”.

Turnaround: published, and counted from when

Freedom Diagnostics publishes an average of 1 to 3 business days. TrustPointe, PharmLabs and Bioviridian state 3 to 5, ILS about a week, and ACS 9 to 11 business days. Accumark quotes 48 to 72 hours from sample acceptance, and ILS counts the receipt date as day 0 for its 3-day rush. Ask which event starts the clock, then add transit time. Our turnaround guide goes through each step.

Accreditation: read the scope

ISO/IEC 17025 accreditation covers only the methods listed in the lab’s scope. Vanguard holds A2LA certificate 6377.01. Its scope includes food microbiology, preservatives and residual solvents including trifluoroacetic acid, and does not list peptide purity, identity, endotoxin or sterility. PharmLabs holds PJLA certificate L25-933-R1, and its scope lists 10 peptides by HPLC, including BPC-157, semaglutide and ipamorelin. Retatrutide, tirzepatide and TB-500 are not on that list. Ethos Analytics shows page one of a PJLA certificate on its site, without the scope pages. MDx says its accreditation expired and re-accreditation is pending after a March 2026 audit. Accumark’s home page says “ISO 17025 Pending”.

We do not hold ISO/IEC 17025 accreditation. Our guide to ISO/IEC 17025 for peptides shows how to read a scope document.

Brokers and free community testing

Some services do not run the tests themselves. Finnrick, a rating site that serves US buyers, offers free community testing of identity, purity and quantity. It picks the lab, publishes the result and asks for a batch ID with photo evidence. Its partner labs in September 2026 included Krause, BTLabs, Ichor Life Sciences and PharmLabs. CheckPeptide names Ethos Analytics as the lab behind its panels, and BatchGuild refers buyers to Accumark.

The lab that measures your vial sets the method and the way the report is verified. Find out which lab it is before you pay. Our Finnrick guide covers how its free tests and ratings work.

Sending samples from the US to a lab abroad

US buyers also mail samples overseas. Janoshik in the Czech Republic takes samples from any country and sends shipping instructions after payment. Its standard peptide test reports mg per vial and purity, with an average turnaround of 7 business days. A parcel that leaves the US needs an accurate customs declaration, and the courier’s rules apply. Our guides on where to test peptides and how to send peptides for testing cover packing and paperwork.

What HK Analytical does for US buyers

One order can cover identity (LC-MS), purity (HPLC), content per vial, blind GLP-1 identification, endotoxin (LAL), Sterility (USP <71>, 14 days), residual solvents, counter-ion (TFA, acetate), water content (Karl Fischer) and vial-to-vial consistency, in any mix per sample. Results within days of receipt. Sterility (USP <71>, 14 days) is the one test that takes 14 days, because the method incubates for 14 days.

Every number comes with its raw data. The report is a signed record with the lab’s own photo of the vial as received, and anyone with its private link can check it at hkanalytical.com/verify. Quotes are on request at /quote. Once you accept a quote, we send your sample numbers and the address, and the vials travel unopened with the custody form inside. The steps are on how it works.