peptide-evidence

TitrateLab Batch Finder: A Praetorian Peptides COA Case Study

September 10–11 evidence receipts, laboratory sources and package-normalized advertised prices · last reviewed · methodology

Bottom line

Evidence reviewed 2026-09-11

TitrateLab's Batch Finder searches public peptide COAs by compound and printed code, or supporting vial details, so relevant reports can surface across seller names. Our September 2026 case study shows how those matches can uncover questions about provenance and pricing, without proving who supplied whom or that two vials share a batch.

Evidence base: September 2026 Batch Finder case study; a small, nonrandom code review and a separate 13-listing price comparison

Evidence boundary: Praetorian Labs and Praetorian Peptides are not independently confirmed as the same business. Repeated packaging codes do not prove an identical production lot, a direct supply relationship, or product safety.

What can you find with Batch Finder?

The shop name is not always the name on the certificate of analysis (COA). A sample may be submitted by a customer or reseller under another name. If you only search the storefront, a relevant laboratory report can be easy to miss.

TitrateLab’s Find Your Batch starts with the product clues instead: choose the compound, then enter a printed batch, lot, box or kit code. No code? Use at least three supporting details, such as labeled strength, cap color, packaging or purchase month, to look for possibilities. Inspect each candidate’s date and source; the tool does not authenticate the contents of your vial.

That helps answer more than “Where is my COA?” A repeated identifier can reveal testing under another seller name and give you a reason to investigate provenance. The connection is in the report fields—not the branding. Matching cap colors alone do not establish a shared batch, and even an exact code can be reused across production runs.

Search your peptide batch →

One search, two seller names: the Batch Finder case study

This investigation began with MOTS-C / 990057 from an order our researcher reported buying from ERP—Shanghai ERP peptide Biotechnology, a Chinese peptide vendor. The Batch Finder search surfaced a report naming Praetorian Labs. A search for a test had become a lead worth checking.

The clearest public cross-check was retatrutide 30 mg / 510005: a Freedom Diagnostics COA names Praetorian Labs, while a Finnrick testing record attributes the same compound, stated strength and identifier to ERP. The sources below let you compare the client/vendor, strength, code and dates yourself. They are different tests, months apart—not duplicate certificates or proof of a supplier transaction. Praetorian Labs has not been independently connected to the similarly named Praetorian Peptides website.

Freedom Diagnostics COA: Praetorian Labs, Retatrutide 30 mg, lot 510005, reported June 29, 2026
Praetorian Labs: retatrutide 30 mg; lot 510005; June 29, 2026. Original PDF, page 1 rendered without annotations. Laboratory source · Full-size image.
Finnrick record: Shanghai ERP peptide Biotechnology, Retatrutide 30 mg, batch identifier 510005, March 25, 2026
ERP: retatrutide 30 mg; identifier 510005; March 25, 2026. Public testing-page screenshot, September 11. The screenshot names ERP in the vendor field; “G” is the lab code, not the vendor or client. The underlying lab PDF is membership-gated. Testing source · Full-size image.

In the small, nonrandom numeric-code subset reviewed, 100% of Praetorian Labs reports matched ERP-attributed packaging by compound, strength and code. Besides retatrutide, the report-side matches were MOTS-C 40 mg / 990057 and NAD+ 1000 mg / 990450. Those two ERP comparisons rely on privately reviewed community order photos, not additional public ERP COAs. We do not reproduce the private images or identities. The percentage describes this selected subset, not all Praetorian Peptides batches or inventory.

A useful match also shows where the evidence stops

Praetorian Labs and Praetorian Peptides are not independently confirmed as the same business. The website’s own retatrutide certificate names Praetorian Peptides, specifies 10 mg, and gives White Cap as the lot description—not 510005. Batch Finder supplied a lead, not that missing identity evidence. Reused product codes, intermediaries or a shared upstream source could also explain seller-to-seller overlap.

The Praetorian Peptides website COA names Retatrutide 10 mg and White Cap, not Praetorian Labs or lot 510005
The website's own certificate: Praetorian Peptides; retatrutide 10 mg; White Cap; March 2, 2026. Original PDF, page 1 rendered without annotations. Website source · Full-size image.

A batch search can lead to a better price question

Finding a familiar code under another name gives you a reason to compare more than the label. We followed this lead with a separate catalog-price comparison; these prices are not an automatic Batch Finder result or a confirmed supply-chain markup.

On September 11, 2026, Praetorian Peptides advertised GLP-3RT 10 mg at $109 per vial. Its linked COA identifies the compound as retatrutide. ERP’s US offer was $89 for ten 10 mg vials, or $8.90 per vial: a 1,125% advertised-price premium. That measurable difference stands independently of the unresolved business relationship.

Praetorian Peptides product page shows GLP-3RT 10 mg at 109 dollars per vial and links its COA
Praetorian: $109 per vial. Browser capture, September 11, 2026, 02:13 UTC. Product listing · Full-size image.
ERP US warehouse A product page shows 89 dollars with the Retatrutide 10 mg times 10 vials option selected
ERP: $89 per ten-vial kit. The selected option is 10 mg × 10 vials. Browser capture, September 11, 2026, 02:15 UTC. Product listing · Full-size image.
Advertised compound and strength Praetorian, USD/vial ERP US, USD/vial* Price premium
Retatrutide 10 mg $109 $8.90 1,125%
GHK-Cu 100 mg $99 $6.90 1,335%
NAD+ 500 mg $198 $7.40 2,576%

ERP ten-vial kit prices divided by ten; buying a kit requires the full kit spend. Product links point to the ERP comparators; Praetorian prices come from its catalog and the selected 500 mg NAD+ option.

Across 13 matched listings, the median advertised-price premium was 1,002%, or about 11 times ERP’s per-vial equivalent. That is a price comparison—not a measured markup on Praetorian’s costs. Smaller orders, fulfillment, testing and customer service can add value and cost. We have not measured those services, authenticated identical material or obtained supplier invoices.

Try it on the batch you have

  1. Choose the compound and copy the printed code. Check the vial, kit and box; keep the labeled strength handy.
  2. Compare the result with your packaging. Check the test date, dose and reported identifiers. Supporting clues can contradict a candidate as well as strengthen it.
  3. Follow the original report. A different client or vendor name is something to investigate, not something to silently replace with your seller’s name. No match does not mean no test exists; the report or identifier may be missing from the public record.

Find a COA for your batch → Or open the MOTS-C search that started this investigation.

Method and evidence boundary

The full price snapshot was observed September 11, 2026, at 00:53–00:55 UTC; the later retatrutide screenshots reproduce the same prices. Premium = (Praetorian per-vial price ÷ ERP equivalent per-vial price − 1) × 100, rounded to whole percentages. Each matching compound, strength and format received equal weight. ERP requires the full kit purchase. Shipping, taxes and coupons were excluded. Removing ERP’s out-of-stock semaglutide 10 mg and sermorelin 10 mg offers leaves the median unchanged. Unmatched strengths and formats were excluded, not estimated.

The numeric-code review covered June–August 2026 Praetorian Labs reports and selected February–July archived packaging observations, with the March ERP testing record as public corroboration. Cap-only reports and duplicate PDF/image copies were not additional numeric-code matches. Neither a code, cap color nor COA guarantees a purchased vial’s contents or safety. This is not a supplier recommendation or a finding about most domestic resellers.

Source links document this review, not current control of a website, account or representative. The FBI documents brand impersonation through search ads; search placement, a similar business name and HTTPS do not authenticate a seller. A laboratory report does not authenticate a contact or establish product quality or fulfillment.

View vendor contacts — Pro. This article’s directory entry covers ERP only; no Praetorian identity is inferred from the shared name. Pro shows source-checked business contacts only where the maintained directory’s evidence and freshness checks pass. Unresolved contacts remain unavailable; access is not seller endorsement.

TitrateLab Research Desk reviewed the evidence September 11, 2026, with AI assistance. TitrateLab sells subscriptions and earns a margin on some routed orders. See our methodology and commercial disclosure, our domestic-reseller explainer, or send corrections and supporting records to [email protected].

Vendor and manufacturer names are used descriptively to identify parties in the documentary record; inclusion is not endorsement. Think a passage misrepresents the record? [email protected].