pepmg_
● STACK RESEARCH active

Stack Research

Vendor Score 43/100

COA documents, no lab named

43 How the score is built

COA coverageShare of the products this vendor sells that have at least one COA opening at the testing lab. Extra documents for the same product do not change it. Pages that refuse our reader are marked partial and never lower anything. It describes what a vendor publishes, not purity. How we count

We show no percentage here: the gap is in our reading, not in what the vendor publishes. It lowers nothing.

Independent price profile. We track 17 tracked peptide listings from stack-research.com · online since Jul 2026How long the vendor's website domain has existed — from public registration records and the Wayback Machine. It's the domain's age, not proof of how long the business has run. · cheapest tracked: $0.34/mg.

Independent listing — pepmg has no commercial relationship with Stack Research and earns nothing from this link. We track their public prices for comparison only.

Evidence note: 2026-11-14: /coa/ lists 27 vendor-hosted PDF certificates. The ones opened (3) are Accumark Labs certificates, client Stack Research LLC, with sample code and dates. Accumark Labs is not in the lab registry (src/lib/coa-detect.ts KNOWN_LABS), so the scan reads the documents as unattributed; adding a lab needs the lab legitimacy check and Chris's approval. Publication observed, not a purity certification.

About / founder page published ↗
Domain ageHow long the vendor's website domain has existed — from public registration records and the Wayback Machine. It's the domain's age, not proof of how long the business has run. registered Jul 2026 · ~0.3 yr online

Vendor-published info captured from Stack Research's own site — not tested or verified by pepmg. Confirm on their site.

Domain age from public registration records (RDAP) + the Wayback Machine — the domain's age, not proof of how long the business has operated.

Stack Research runs no affiliate program, and pepmg has no paid relationship with them — no link to Stack Research on this page earns pepmg a commission.

refreshed 21m ago

Vendor? Claim this listing

● PRICE POSITION12 compounds

Where Stack Research's prices sit in each market

Sorted from furthest below the median to furthest above. Bar: middle 80% of tracked listings · rule: median · dot: Stack Research's cheapest in-stock $/mg.

Compound Position vs. median $/mg vs. median

Compared with every in-stock, single-compound listing pepmg tracks for each compound (bulk packs, blends and out-of-stock items left out). The axis is the ratio to that compound's median, so every row shares it.

Where Stack Research beats the market

Below the median $/mg, ranked by how far below — not by raw price

  1. Semax

    30 mg · $79.90
    $2.66/mg — view this Semax listing at Stack Research's store (opens in a new tab)
    ▼ 24% below median #21 of 99 listings · median $3.50
    All Semax prices

Products we track

All peptide products in our current snapshot, including blends and out-of-stock listings. Search by name, sort any column, or open a product to compare vendors. This is our indexed catalog, not a guarantee of the store’s complete inventory.

Size, form & budget

Price includes the displayed code where available. Shipping and tax are extra. Unknown sizes or prices are excluded when those filters are set.

Select up to four offers to compare side by side. Click a column heading to sort. Click again to reverse. Scroll sideways for more columns.

Tick up to four offers to compare side by side. Use Sort by to reorder. COA counts are each vendor's own library; batch match is not assumed.

Stack Research catalog · all tracked peptide listings, including out-of-stock products. Prices and stock reflect the last check. Non-comparable products do not enter market rankings. Trust scores measure published evidence, not product safety.
Select
BPC-157 / TB-500 5 mg + 5 mgBlend · Not in price comparison Blend 5 $99.90 — in stock COA detailsVendor library; batch match not assumed Checked within 24 hoursPrice and stock were collected in the latest refresh. View product ↗
BPC-157 10 mgBPC-157 Vial / standard 10 $89.90 $8.99 in stock COA detailsVendor library; batch match not assumed Checked within 24 hoursPrice and stock were collected in the latest refresh. View product ↗
BPC-157 5 mgBPC-157 Vial / standard 5 $49.90 $9.98 in stock COA detailsVendor library; batch match not assumed Checked within 24 hoursPrice and stock were collected in the latest refresh. View product ↗
CJC-1295 no DAC / IpamorelinBlend · Not in price comparison Blend 5 $79.90 — in stock COA detailsVendor library; batch match not assumed Checked within 24 hoursPrice and stock were collected in the latest refresh. View product ↗
GHK-CuGHK-Cu Vial / standard 50 $64.90 $1.30 in stock COA detailsVendor library; batch match not assumed Checked within 24 hoursPrice and stock were collected in the latest refresh. View product ↗
IpamorelinIpamorelin Vial / standard 5 $44.90 $8.98 in stock COA detailsVendor library; batch match not assumed Checked within 24 hoursPrice and stock were collected in the latest refresh. View product ↗
Melanotan IIMelanotan II Vial / standard 10 $54.90 $5.49 in stock COA detailsVendor library; batch match not assumed Checked within 24 hoursPrice and stock were collected in the latest refresh. View product ↗
MOTS-CMOTS-c Vial / standard 10 $99.90 $9.99 in stock COA detailsVendor library; batch match not assumed Checked within 24 hoursPrice and stock were collected in the latest refresh. View product ↗
NAD+NAD+ Vial / standard 500 $169.90 $0.34 in stock COA detailsVendor library; batch match not assumed Checked within 24 hoursPrice and stock were collected in the latest refresh. View product ↗
GLP-3 (RT) 10 mgGLP3 RT Vial / standard 10 $119.90 $11.99 in stock COA detailsVendor library; batch match not assumed Checked within 24 hoursPrice and stock were collected in the latest refresh. View product ↗
GLP-3 (RT) 30 mgGLP3 RT Vial / standard 30 $249.90 $8.33 in stock COA detailsVendor library; batch match not assumed Checked within 24 hoursPrice and stock were collected in the latest refresh. View product ↗
SelankSelank Vial / standard 5 $49.90 $9.98 in stock COA detailsVendor library; batch match not assumed Checked within 24 hoursPrice and stock were collected in the latest refresh. View product ↗
SemaxSemax Vial / standard 30 $79.90 $2.66 in stock COA detailsVendor library; batch match not assumed Checked within 24 hoursPrice and stock were collected in the latest refresh. View product ↗
SermorelinSermorelin Vial / standard 5 $54.90 $10.98 in stock COA detailsVendor library; batch match not assumed Checked within 24 hoursPrice and stock were collected in the latest refresh. View product ↗
TesamorelinTesamorelin Vial / standard 10 $99.90 $9.99 in stock COA detailsVendor library; batch match not assumed Checked within 24 hoursPrice and stock were collected in the latest refresh. View product ↗
GLP-2 (TZ) 10 mgGLP2 TZ Vial / standard 10 $109.90 $10.99 in stock COA detailsVendor library; batch match not assumed Checked within 24 hoursPrice and stock were collected in the latest refresh. View product ↗
GLP-2 (TZ) 30 mgGLP2 TZ Vial / standard 30 $219.90 $7.33 in stock COA detailsVendor library; batch match not assumed Checked within 24 hoursPrice and stock were collected in the latest refresh. View product ↗
● pepmg vendor score criteria-based · not a user review
43/100
43

Stack Research scores 43/100 in pepmg's criteria-based Vendor Score, which rates only what a vendor publishes about lab testing and about itself, not its products and not its prices. What we observed: COA documents, no lab named. The biggest credibility signal pepmg weighs is how a vendor publishes lab tests: it posts COA documents but attributes them to no testing lab. Neither price nor catalog size affects this score, but for context it prices about 1.7x the tracked median across the compounds it shares with other tracked vendors, over 15 tracked listings. Its prices are machine-readable and it publishes an About page, and the domain is newer, online since Jul 2026, which pepmg counts as neutral rather than a mark against it. This rates what Stack Research publishes about lab testing and about itself, not the purity or authenticity of any vial, which pepmg can't verify, so read the COAs yourself. Research use only.

  • Room to improve Publishes COA documents — no testing lab attributed
How we scored this
COA transparency
30/87 publishes COA documents — no testing lab attributed
About / who they are
8/8 publishes an About/founder page
Public price data
5/5 publishes machine-readable public prices

Stated, but NOT scored. These describe the vendor; they earn no points either way.

Price vs market 1.74x the tracked median across 12 shared compound(s)
Catalog 15 clean in-stock listing(s) tracked
Track record active · new domain (online Jul 2026) — no age penalty

What would raise this score. Published behaviour only. How a vendor runs its business is its own call, and none of this affects the $/mg ranking.

  • Naming the testing lab alongside the certificates would let us record them as third-party rather than unattributed. (up to +37)

Computed from what this vendor publishes about lab testing and itself. Price and catalog size are shown above as facts and are deliberately NOT scored — $/mg is the ranking, and it is affiliate-blind. No opinions, no testimonials.

Are you the vendor? If you have changed something we score here, published something we did not find, or think we got it wrong, reach out or email hello@pepmg.com and we will re-check. Vendor corrections have already changed ratings on this site.

COA library (0 indexed records)

Browse every document and report currently indexed for this vendor. A COA covers its stated product and batch; a vendor-level link does not establish a match to every listing. Some labs limit automated access.

No individual documents are indexed yet. A public COA library link is not recorded.

● INDEPENDENT REVIEWSoff-site · not ours

We don't host reviews — an unverifiable review box is a magnet for bots and paid posts, and we won't pretend otherwise. Instead, here's where you can read what real buyers say about Stack Research, on sites we don't control:

r/Peptides discussion ↗ · search Trustpilot profile ↗ · search

These are independent, unmoderated sources — we link them, we don't vouch for them, and a "profile" or "search" link may turn up little or nothing. pepmg's job is the part we can stand behind: prices captured first-party with a timestamp, ranked purely by $/mg, plus the objective Vendor Score above. Vetting a source you're about to buy from still matters, and that call is ultimately yours — we've made it as informed as we honestly can.

All products listed are sold by third-party vendors for laboratory and research use only (RUO). Where an FDA label, a peer-reviewed study or a clinical-trial registry entry has published a dose, pepmg reports it with the source named and the tier labeled (a registry figure is marked trial registry, not peer-reviewed), because that is safer than guessing. It is a report, not medical advice and not a recommendation to use anything. pepmg sells nothing and ships nothing. Listings are price-tracking data, not endorsements.