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Peptide and Vendor Comparisons

Two kinds of side-by-side: peptide vs peptide (mechanism, published research, regulatory status and what to check on a COA) and vendor vs vendor (COAs, named labs, Finnrick data and FDA record).

Peptide vs peptide

How two research compounds differ: mechanism, published research, regulatory status and what to check on a COA.

  • Peptide vs peptide

    Tesamorelin vs Sermorelin: Two GHRH Analogs Compared

    Both act on the GHRH receptor. Tesamorelin is a modified full-length GHRH approved as Egrifta for HIV-associated abdominal fat; sermorelin is the unmodified 29-amino-acid fragment, approved as Geref until its 2008 discontinuation. Here's how they compare.

    4 min read · Updated Oct 2026

  • Peptide vs peptide

    Tesamorelin vs Ipamorelin: Approved Drug vs Research Peptide

    Tesamorelin is an FDA-approved GHRH analog sold as Egrifta for HIV-associated abdominal fat. Ipamorelin is an unapproved ghrelin-receptor agonist that failed its only published Phase 2 trial and remains on FDA's Category 2 list. Here's how they compare.

    4 min read · Updated Oct 2026

  • Peptide vs peptide

    Retatrutide vs Tirzepatide: Trials, Status and Mechanism

    Tirzepatide (Mounjaro, Zepbound) is an FDA-approved dual GIP/GLP-1 agonist. Retatrutide is Lilly's investigational triple agonist, with Phase 3 results in 2025-2026 but no approval. Here's how the trials, mechanisms and regulatory status compare.

    5 min read · Updated Oct 2026

  • Peptide vs peptide

    Semax vs Selank: Origins, Research and Regulatory Status

    Semax and selank are sister heptapeptides from the same Russian institute. Semax is an ACTH(4-10) analog studied in stroke and cognition; selank is a tuftsin analog studied as an anxiolytic. Neither is FDA-approved, and only semax was voted on by FDA's compounding advisers in 2026.

    4 min read · Updated Oct 2026

  • Peptide vs peptide

    Ipamorelin vs Sermorelin: Two GH Pathways Compared

    Ipamorelin and sermorelin both trigger growth hormone release, but through different receptors. Sermorelin was once FDA-approved as Geref; ipamorelin was never approved and remains on FDA's Category 2 list. Here's how the research and regulatory status compare.

    4 min read · Updated Oct 2026

  • Peptide vs peptide

    CJC-1295 vs Sermorelin: GHRH Analogs Compared

    Sermorelin is the first 29 amino acids of human GHRH and was once FDA-approved as Geref. CJC-1295 is a modified, albumin-binding version that was never approved. Here's how they differ, and why 'CJC-1295 without DAC' is a different molecule.

    4 min read · Updated Oct 2026

  • Peptide vs peptide

    Semaglutide vs Tirzepatide: Trial Results Compared

    Semaglutide (Ozempic, Wegovy) and tirzepatide (Mounjaro, Zepbound) are FDA-approved prescription drugs. In the SURMOUNT-5 head-to-head trial, tirzepatide produced more weight loss. Here's what the trials and labels say.

    5 min read · Updated Oct 2026

Vendor vs vendor

Head-to-head checks of two vendors: COAs and named labs, independent tests, policies and prices.

  • Vendor vs vendor

    Peptide Confidential vs American Peptides (2026): Lot Records, Labs & Prices

    Both let you look up a certificate by the lot on your vial. Peptide Confidential names its lab on every record and keeps failed lots public; American Peptides publishes its LLC, ships from Louisiana and has the bigger lookup.

    4 min read · Updated Oct 2026

  • Vendor vs vendor

    Peptide Confidential vs Blank Peptides (2026): Lot Records, Endotoxin & Prices

    Both publish lot-level records with a code on the vial. Blank Peptides scores higher (7.8 vs 7.6) for endotoxin reports and US shipping with a 10% code; Peptide Confidential keeps failed lots public, names its founder and is cheaper.

    4 min read · Updated Oct 2026

  • Vendor vs vendor

    Peptide Confidential vs Peptide Plugs (2026): Lab Checks, Lot Records & Prices

    Peptide Plugs scores higher on our method (8.1 vs 7.6): its Freedom Diagnostics accession codes can be checked at the lab, it publishes its LLC and ships inside the US. Peptide Confidential keeps failed lots public, but ships from Canada.

    4 min read · Updated Oct 2026

  • Vendor vs vendor

    Peptide Confidential vs NextGenPeps (2026): Lot Records, Labs & Prices

    NextGenPeps scores higher on our method (8.0 vs 7.6): it names Janoshik and BioRegen, publishes its LLC and ships inside the US. Peptide Confidential matches each record to a lot, keeps failed lots public and is cheaper on most items, but ships from Canada.

    4 min read · Updated Oct 2026

  • Vendor vs vendor

    Blank Peptides vs Peptide Plugs (2026): Freedom Diagnostics COAs Compared

    Two Texas-shipping vendors with lab-checkable certificates. Peptide Plugs scores a little higher (8.1 vs 7.8) for its published LLC and address; Blank Peptides adds endotoxin reports per lot, a lot on every vial and a 10% code.

    3 min read · Updated Oct 2026

  • Vendor vs vendor

    Blank Peptides vs NextGenPeps (2026): Named Labs, Lot COAs & Prices

    Two of the best-documented vendors we rate, nearly tied on our method (NextGenPeps 8.0, Blank 7.8). Blank matches every certificate to a lot and adds endotoxin reports; NextGenPeps publishes its LLC and address and is cheaper.

    3 min read · Updated Oct 2026

  • Vendor vs vendor

    Blank Peptides vs PSPeptides (2026): COAs, Labeling & Codes Compared

    Both take our code CHECKED for 10% off. Blank Peptides scores well ahead on our method (7.8 vs 7.0): named labs on every certificate, per-lot endotoxin reports and no dosing content. PSPeptides has the better track record on Trustpilot and more payment options.

    3 min read · Updated Oct 2026

  • Vendor vs vendor

    Blank Peptides vs American Peptides (2026): Lot COAs, Labs & Prices

    Both are 2026-era US vendors with lot lookups. Blank Peptides scores higher on our method (7.8 vs 7.6): it names its labs on every certificate and adds an endotoxin report per lot. American Peptides publishes its LLC and is cheaper on GLP-class vials.

    4 min read · Updated Oct 2026

  • Vendor vs vendor

    American Peptides vs PSPeptides (2026): COAs, Labeling & Policies

    American Peptides scores higher on our transparency method (7.6 vs 7.0) thanks to a lot-number COA lookup and cleaner content. PSPeptides ships faster, takes more payment methods and has a 10% code, but its blog publishes dosing guides.

    5 min read · Updated Oct 2026

  • Vendor vs vendor

    American Peptides vs Swiss Chems (2026): COAs, FDA Record & Finnrick Data

    American Peptides scores higher on our transparency method (7.6 vs 7.2) on a lot-number COA lookup and a clean FDA record. Swiss Chems has operated since 2018 and has Finnrick data, but also an FDA warning letter and a 4-of-10 pass rate.

    5 min read · Updated Oct 2026

  • Vendor vs vendor

    PSPeptides vs Ascension Peptides (2026): COAs, Labeling & Coupon Codes

    Ascension Peptides scores higher on our transparency method (7.4 vs 7.0), mainly because PSPeptides publishes dosing guides. PSPeptides ships internationally and takes more payment types. We have codes for both.

    5 min read · Updated Oct 2026

  • Vendor vs vendor

    Peptide Plugs vs Swiss Chems (2026): Lab Verification vs Track Record

    Peptide Plugs scores well ahead (8.1 vs 7.2) on lab-side COA checks, a published address and a clean FDA record. Swiss Chems has history, Finnrick data and international shipping, plus an FDA letter.

    5 min read · Updated Oct 2026

  • Vendor vs vendor

    Swiss Chems vs PSPeptides (2026): FDA Record, COAs & Labeling

    Swiss Chems has a long history and independent data, but also an FDA warning letter. PSPeptides has no FDA letter, but publishes dosing guides. Both sit at the bottom of our ratings (7.2 and 7.0 on our 5-10 scale).

    4 min read · Updated Oct 2026

  • Vendor vs vendor

    Alpha Pro Peptides vs PSPeptides (2026): COAs, Labeling & Shipping

    Alpha Pro Peptides scores higher on our transparency method (7.5 vs 7.0) on lot-level COAs and cleaner content. PSPeptides ships internationally, takes more payment types and has our 10% code.

    5 min read · Updated Oct 2026

  • Vendor vs vendor

    Alpha Pro Peptides vs Swiss Chems (2026): New Vendor vs FDA Record

    Alpha Pro Peptides scores higher on our transparency method (7.5 vs 7.2) on lot-level COAs and a clean FDA record, but it's new with no independent data. Swiss Chems has history and Finnrick data, plus an FDA warning letter.

    5 min read · Updated Oct 2026

  • Vendor vs vendor

    American Peptides vs NextGenPeps (2026): COAs, Labs & Policies

    American Peptides offers a lot-number COA lookup. NextGenPeps names both of its labs on every library entry and scores higher on our transparency method. Neither has independent test data.

    4 min read · Updated Oct 2026

  • Vendor vs vendor

    Ascension Peptides vs Peptide Plugs (2026): COAs, Labs & Price

    Peptide Plugs scores higher on our transparency method (8.1 vs 7.4) on lab-side COA verification and a published address. Ascension has a lot-searchable COA library and our 50% first-order code.

    5 min read · Updated Oct 2026

  • Vendor vs vendor

    NextGenPeps vs Peptide Plugs (2026): Named Labs, COAs & Policies

    Our two highest transparency scorers are 0.1 apart. Peptide Plugs (8.1) gives accession codes you can check at the lab. NextGenPeps (8.0) names two labs and has cleaner category names. Neither has independent test data.

    5 min read · Updated Oct 2026

  • Vendor vs vendor

    NextGenPeps vs PSPeptides (2026): Named Labs, Labeling & Shipping

    NextGenPeps scores a full point higher (8.0 vs 7.0): it names its labs on every COA and keeps its content strictly research-use. PSPeptides ships faster, takes more payment methods and has a 10% code, but publishes dosing guides.

    5 min read · Updated Oct 2026

  • Vendor vs vendor

    Peptide Plugs vs American Peptides (2026): Lab Checks, COAs & Policies

    Peptide Plugs scores higher on our transparency method (8.1 vs 7.6) because you can check its COAs on the lab's own site and it publishes a street address. American Peptides has a lot lookup and ships internationally.

    5 min read · Updated Oct 2026

  • Vendor vs vendor

    NextGenPeps vs Swiss Chems (2026): Janoshik COAs, FDA Record & Finnrick

    NextGenPeps scores higher on our transparency method (8.0 vs 7.2): it names its labs on every COA and has a clean FDA record. Swiss Chems has operated since 2018 and has Finnrick data, but also an FDA warning letter and a 4-of-10 pass rate.

    5 min read · Updated Oct 2026

  • Vendor vs vendor

    Peptide Plugs vs PSPeptides (2026): Lab Verification, Labeling & Price

    Our highest and lowest transparency scorers. Peptide Plugs (8.1) gives lab accession codes and had the lower price per mg. PSPeptides (7.0) ships faster, takes more payment methods and has a 10% code, but publishes dosing guides.

    6 min read · Updated Oct 2026

  • Vendor vs vendor

    Ascension Peptides vs NextGenPeps (2026): COAs, Labs & Policies

    NextGenPeps scores higher on our transparency method (8.0 vs 7.4) because it names its labs and publishes its LLC and address. Ascension has the easier lot search and a 50% first-order code. Neither has independent test data.

    5 min read · Updated Oct 2026

  • Vendor vs vendor

    American Peptides vs Ascension Peptides (2026): COA Lookups, Labs & Policies

    Both let you find a COA by lot. American Peptides scores slightly higher on our transparency method (7.6 vs 7.4) because it names a lab and publishes its LLC. Ascension has a 50% first-order code. Neither has independent test data.

    4 min read · Updated Oct 2026

  • Vendor vs vendor

    Ascension Peptides vs Swiss Chems (2026): COAs, FDA Record & Shipping

    Ascension Peptides scores higher on our transparency method (7.4 vs 7.2) on a lot-searchable COA library and a clean FDA record. Swiss Chems has a longer history and Finnrick data, plus an FDA warning letter.

    5 min read · Updated Oct 2026

  • Vendor vs vendor

    Alpha Pro Peptides vs Ascension Peptides (2026): COAs, Labs & Price

    The two score almost the same (7.5 vs 7.4). Alpha Pro shows net content on every certificate and ships free over $199. Ascension has a lot-searchable library and our 50% first-order code.

    5 min read · Updated Oct 2026

  • Vendor vs vendor

    Alpha Pro Peptides vs NextGenPeps (2026): COAs, Labs & Policies

    NextGenPeps scores higher on our transparency method (8.0 vs 7.5): it names its labs on its own site and publishes its entity and address. Alpha Pro Peptides shows lot IDs and net content per COA and had the lower TB-500 price. Neither has independent test data.

    5 min read · Updated Oct 2026

  • Vendor vs vendor

    Alpha Pro Peptides vs American Peptides (2026): COA Tables, Labs & Policies

    Two February 2026 vendors, 0.1 apart on transparency. American Peptides (7.6) has a lot-number COA lookup and more business disclosure. Alpha Pro Peptides (7.5) shows net content and has its certificates traced to the lab. Neither has independent test data.

    5 min read · Updated Oct 2026

  • Vendor vs vendor

    Alpha Pro Peptides vs Peptide Plugs (2026): Two Freedom Diagnostics Vendors

    Both vendors' certificates come from Freedom Diagnostics. Peptide Plugs scores higher on our transparency method (8.1 vs 7.5) because it names the lab on its site, gives lab lookup codes and publishes its address.

    5 min read · Updated Oct 2026