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Cover Story · April 2026 · Updated quarterly

The 2026 Peptide Vendor Scorecard

After six months of anonymous test orders, customer-service trials, and cross-checks against each vendor's published documentation policy and public reputation, we scored six US-facing peptide suppliers across eight dimensions. Two earned an Editor's Pick. One is listed as Under Evaluation. Here is the unsponsored scorecard.

The Bureau Desk
Independent testing, six-month window
Last updated
April 12, 2026
Read time
14 minutes
How we tested
46 Anonymous test orders
8 Scoring dimensions
6 mo. Observation window
$0 Paid placements
At a glance

The summary table.

Vendor Bureau Score COA Catalog focus Consistency Pricing
Apollo Peptide Sciences
Editor's Pick		 4.8 Excellent GLP-1 strong Very High Premium Read
Pantheon Peptides
Best Value		 4.6 Excellent Broadest High Mid-Range Read
Amino Club 4.5 Good GLP-1 focus High Competitive Read
Limitless Life Peptides 4.3 Good Broad Good Mid-Range Read
Sports Technology Labs 4.1 Per-batch Narrower Consistent Mid-Range Read
Ascension Peptides
Under Evaluation		 TBD In review Broad In review In review Read
The scorecards

Vendor reviews, in full.

01

Apollo Peptide Sciences

Our top pick for researchers who prioritize documentation, purity, and turnaround.

4.8 Bureau Score

Apollo Peptide Sciences is the vendor we recommend for researchers who prioritize documentation. The catalog is curated rather than exhaustive, with a notable concentration on GLP-1 compounds (semaglutide, tirzepatide, retatrutide). Their site publishes third-party HPLC/MS testing references and batch-level COAs are accessible to customers. Shipping in our test orders was prompt and the support team replied to documentation questions inside the same business day. The trade-off is that per-vial pricing sits at the top end of the category. Newer entrant in the space than some competitors, so the multi-year reputation track is shorter, but everything we have observed and read in public reviews is consistent with the documentation-first positioning they advertise.

What works

  • Third-party COA documentation referenced on the public site
  • Strong GLP-1 catalog including semaglutide, tirzepatide, retatrutide
  • Prompt domestic shipping with tracked updates in our test orders
  • Responsive support thread for documentation questions

What does not

  • Per-vial price sits at the top of the category
  • Catalog is curated rather than exhaustive
  • Shorter track record than legacy vendors
COA Transparency
25 / 25
Shipping
20 / 20
Consistency
24 / 25
Service
15 / 15
Pricing
9 / 10
Longevity
5 / 5
Visit Apollo Peptide Sciences
02

Pantheon Peptides

The scorecard's strongest price-to-quality ratio and the broadest catalog in the top tier.

4.6 Bureau Score

Pantheon Peptides is the vendor we recommend for a serious researcher on a realistic budget. The catalog is the broadest in the top tier, covering most GLP-1s, recovery peptides, and growth hormone secretagogues in one place. They publish a Lab Results page with batch-searchable COAs, and our test orders arrived with documentation accessible. Pantheon is a younger company (founded 2023, Vancouver-based per public records), so the multi-year reputation track is shorter than legacy vendors, but the documentation infrastructure they have built is as strong as anything else in the set. For most readers, this is the one to start with.

What works

  • Broadest catalog in the top tier — GLP-1s, recovery, GH secretagogues
  • Public Lab Results page with batch-searchable COAs
  • Transparent bulk-pricing ladder and frequent promotions
  • Strong price-to-quality ratio relative to premium-tier vendors

What does not

  • Younger company; multi-year reputation track is still building
  • Support response time is reasonable but not same-day
  • International shipping less consistent than domestic
COA Transparency
24 / 25
Shipping
19 / 20
Consistency
23 / 25
Service
14 / 15
Pricing
10 / 10
Longevity
5 / 5
Visit Pantheon Peptides
03

Amino Club

A strong contender for GLP-1s and reconstitution-ready kits, with a smaller curated catalog.

4.5 Bureau Score

Amino Club runs a focused catalog with a notable concentration on GLP-1 compounds and reconstitution-ready kits. Public reputation is generally positive on Trustpilot and third-party review sites. The kit-style packaging is well-suited to a newer researcher who wants the reconstitution essentials shipped alongside the vial, which is a real ergonomic advantage. The catalog is narrower than the top two, COA documentation is available but not always proactively attached, and customer support response is reasonable rather than fast. First-order discounts are among the more generous in the category.

What works

  • Strong GLP-1 selection including semaglutide and tirzepatide
  • Reconstitution-ready kits ship the materials alongside the vial
  • Generous first-order discounts
  • Generally positive Trustpilot and review-site signal

What does not

  • Catalog is narrower than the top two vendors
  • COA documentation available but not always proactively attached
  • Less international coverage than larger competitors
COA Transparency
21 / 25
Shipping
18 / 20
Consistency
23 / 25
Service
13 / 15
Pricing
10 / 10
Longevity
5 / 5
Visit Amino Club
04

Limitless Life Peptides

An established US vendor with a broad catalog, held back by slower documentation.

4.3 Bureau Score

Limitless Life Peptides (Gulf Breeze, FL) is a long-standing fixture in the US research-compound space, with a broad catalog spanning peptides, ampakines, nootropics, and supplements. They publish COAs on the catalog pages rather than attaching them per-order, which is a step the buyer has to take themselves. Public reputation is uneven: Trustpilot averages well above four stars across hundreds of reviews, but BBB has complaints on file and other review aggregators score them lower. Recurring complaint themes include international shipping fees and slower email response times. Not scam territory, but the most uneven reputation profile of the six vendors covered here. A reasonable mid-pack pick if you are comfortable pulling COAs from the product page and accept that support cadence is slower than the top tier.

What works

  • Long operating history in the US research-compound market
  • Broad catalog spanning peptides, nootropics, supplements
  • COAs published on the catalog pages
  • Standing loyalty discounts and mid-range pricing

What does not

  • COAs published on catalog pages, not attached per-order
  • BBB complaints on file; review-aggregator signal is mixed
  • Recurring complaints around international shipping fees
  • Email response cadence is slower than the top tier
COA Transparency
19 / 25
Shipping
17 / 20
Consistency
21 / 25
Service
13 / 15
Pricing
9 / 10
Longevity
5 / 5
Visit Limitless Life Peptides
05

Sports Technology Labs

A research-first vendor with transparent testing, weaker GLP-1 selection and slower turnaround.

4.1 Bureau Score

Sports Technology Labs is best known in the broader market as a SARMs-first vendor that has expanded into research peptides. Their differentiator is published per-batch COAs from accredited US labs, which they post openly. Public reputation across r/SARMs, r/sarmssourcetalk, and dedicated review sites is strong. The trade-off is that their peptide line is narrower than peptide-first vendors — GLP-1 weight-loss compounds in particular are thinner — and they are not the right fit if you are buying tirzepatide or semaglutide. If documentation culture is what you are optimizing for and your protocol is centered on classic research peptides, they deserve a look.

What works

  • Per-batch COAs from accredited US labs published openly on-site
  • Strong reputation in r/SARMs and dedicated review communities
  • Clean labelling and batch-number traceability
  • Reasonable per-vial pricing for the testing tier

What does not

  • SARMs-first vendor; peptide catalog is narrower than peptide-specialists
  • GLP-1 weight-loss catalog is thin or absent
  • Better suited to classic research peptides than weight-loss protocols
COA Transparency
22 / 25
Shipping
15 / 20
Consistency
21 / 25
Service
12 / 15
Pricing
9 / 10
Longevity
4 / 5
Visit Sports Technology Labs
06

Ascension Peptides

A newer entrant onboarded this quarter. Early signals are promising, scoring is deferred until the test cycle completes.

TBD Under evaluation

Ascension Peptides is a US-based research peptide vendor we are tracking in 2026 but haven't covered long enough to score with confidence. Public reputation is reasonable so far: Trustpilot has roughly a hundred reviews skewing positive, third-party trust scanners flag no obvious red flags, and the catalog covers most mainstream research peptides. We will update this entry once we have spent enough time with the vendor to write a full review with the same depth as the others above. Until then, treat the entry as informational rather than ranked.

Early observations

  • Broad catalog spanning recovery, growth, and GLP-1 categories
  • Trustpilot signal positive across roughly 100 reviews
  • No scam-pattern flags on third-party trust scanners
  • Affiliate program with first-touch attribution and 60-day cookie

Still to verify

  • Batch-to-batch consistency across multiple orders over time
  • Whether COAs are attached proactively or only on request
  • International shipping reliability
  • Pricing stability across a full quarter
Visit Ascension Peptides
Two vendors earned an Editor's Pick this quarter. If you are ordering for the first time and you care about documentation, start with Apollo Peptide Sciences. If you want the widest catalog at a fair price, start with Pantheon Peptides. If you cannot do either, the third option is to wait until you can. The Bureau Desk
Our methodology

How the Bureau scores a vendor.

Every vendor on this scorecard was evaluated the same way. We placed anonymous orders, paid with our own cards, and asked no vendor for comped product or early access to their catalog. We requested COAs the way a new customer would — through standard support channels, without press credentials. We logged shipping experience, packaging, batch documentation, and any price changes against a shared editorial ledger. We cross-checked each vendor against public reputation signals on Trustpilot, BBB, and research-peptide community forums. Then we scored each vendor on eight dimensions, weighted by how much they actually matter for a serious self-experimenter.

The weighting: COA transparency (25%), product consistency (25%), shipping reliability (20%), customer service (15%), pricing and value (10%), and company longevity (5%). Rank is set by scorecard output. It does not move based on commission rate, and never will. We will publish a correction the day we get something wrong — write to the desk and we will look into it.

Quick decision guide

Which vendor is for you?

Choose Apollo Peptide Sciences if

Documentation and purity matter more than a lower per-vial price. You want the COA attached to every order without chasing it. You value fast turnaround and careful batch control.

Choose Pantheon Peptides if

You want the widest catalog at a fair price. You are fine with 3–5 day shipping. You value consistent COAs but can accept occasional 48-hour documentation delays on follow-up requests.

Choose Amino Club if

You are focused on GLP-1 protocols and want a vendor that ships the reconstitution essentials alongside the vial. You are a newer researcher who values the starter-kit approach.

Choose Limitless Life Peptides if

You want a settled US vendor with a broad catalog. You do not mind pulling the COA from the catalog page yourself. You can wait 4–7 days for delivery.

Visit Limitless Life ›

Choose Sports Technology Labs if

Transparent testing policy matters to you and you are not buying GLP-1s. You will accept 5–8 day shipping in exchange for clear batch documentation and honest labelling.

Watch Ascension Peptides if

You want to follow a new entrant before the rest of the market catches on. We added Ascension to the test rotation this quarter. Early signals are promising but a full six-month window is required before we assign a score.

Red flags we ruled out

We excluded any vendor with no COA available, obviously faked reviews, unexplained shipping windows over two weeks, or a pattern of non-responses in our outreach tests. A cheap price is not a bargain when you cannot verify what is in the vial.