Investigate Peptides Support testing

Independent peptide investigation

Follow the sample.
Read the result.

We pay the lab ourselves for every test we publish.

We earn nothing when you buy. No affiliate links, no coupon codes, no paid placement.

We source research peptides independently, document their path to the lab, and publish third-party findings on identity, purity, and net content in mg. Every outcome is public.

See the test results Why Investigate Peptides
Samples tested
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Suppliers
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Independent labs
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COAs published
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Public record

Test results

Measured net content against the label claim, purity, and identity for each vial, graded A–F — with the original lab report one click away.

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Why Investigate Peptides

Independent by design.

We pay the lab ourselves for every test we publish, and we earn nothing when you buy.

  • No affiliate money

    We earn nothing when you buy. No affiliate links, no coupon codes, no paid placement.

  • Our own samples

    Every result comes from a vial we picked and sent to the lab ourselves — never from a supplier’s own paperwork.

  • Published cutoffs

    Our A–F cutoffs are published. Check any grade against the lab’s numbers yourself.

  • Milligrams count

    A 99% pure vial that’s 15% short on milligrams still gets marked down.

  • Lab findings first

    We publish what the lab found, even when it disagrees with another site.

  • Traceable records

    Every result shows the lot (or that none was printed on the box), the test dates and the original lab report.

  • Open to everyone

    Free, no account, no paywall. Every COA opens in one click.

Ownership. Our founder also operates other businesses, including one in the research supply space. Those businesses are never tested, listed, or promoted here, and every brand we test is graded on the same published scale.

Sample-specific evidence

Tested suppliers

Every supplier we have published results for, built directly from the records above. Choose one to filter the results to its samples.

Listings are evidence records, not endorsements or certifications.

Our process

A traceable path from vial to report.

A supplier’s own COA can’t tell you what a separately bought vial contains. So we buy our own, send them to a lab, and show you what came back.

  1. 01

    Buy

    Purchase the kit and record the supplier, product, lot (or that none is printed), manufacture date and price paid. Any kit provided free is labeled Supplier-provided.

  2. 02

    Sample

    Photograph the kit, pull one vial, label it with an IP sample number, and keep the remaining vials as retest backups.

  3. 03

    Submit

    Ship it to the lab and record the lab order, packing slip and requested tests.

  4. 04

    Grade & publish

    Post identity, purity and net content with the original lab report, photos and an A–F grade on our published scale — whatever the outcome.

  5. 05

    Retest & cross-check

    Retest from backup vials when a result is disputed, and show reports side by side when the same lot is tested at a second lab.

Independent sourcing

We disclose whether a vial was purchased or received and identify the source for each result.

Documented handling

Each record can include packaging, labeling, shipment, and laboratory documents.

Every outcome

Failures and inconclusive findings stay public. When the same lot is tested at more than one lab, the reports will be linked.

Support the work

Help fund independent testing.

Contributions help cover samples, laboratory fees, shipping, and public documentation. Funding does not influence which outcomes we publish.