Summer 2026 DropOne batch, tested together. When a lot is gone it is gone until the Autumn 2026 Drop.41 days leftShop the drop →

Sourced and shipped from the United States. How testing works

Independently verified research supply

Research peptides.
Every lot verified twice.

Causa Labs supplies research peptides and reference compounds, sourced and shipped from the United States. Each lot is tested by HPLC-MS at Janoshik and again at Freedom Diagnostics, and ships with a Certificate of Analysis published against the lot number on the box. Local pickup available across Southwest Florida.

  • Independently tested
  • Certificate per lot
  • US sourced & shipped

For research use only. Not for human consumption.

001 / 050
Verified

Lot artwork is generated from the compound name — unique per material, no stock photography.

  • Janoshik & Freedom tested
  • Vetted vendors only
  • Certificate per lot
  • Lot traceable
  • US sourced & shipped
  • FIFO fulfilment
  • SWFL local pickup
  • Research use only

Our standard

Trust, but verify.

We don't take anyone's word for it — not even our own. Every batch is tested on arrival, then confirmed again by a second independent lab before it ships.

  • Janoshik + Freedom tested

    Once on arrival, once again from a real order before it ships. Two named labs, not one.

  • Traceable by lot

    The lot number printed on the box matches a certificate published on this site.

  • US sourced & shipped

    Held and fulfilled from a United States warehouse. First in, first out.

  • Vetted vendors only

    We only buy from sources with a documented record across many independently assayed batches.

Verification

How a batch becomes a lot

Four steps, in order, every time. Nothing ships until the certificate is published and sealed to the lot.

  1. Vendor vetted

    Sourced only from vendors with a documented multi-batch assay record.

  2. Janoshik

    Identity, purity and mass by HPLC-MS, on arrival.

  3. Freedom Diagnostics

    Re-tested from a real order by the second lab.

  4. Published

    Certificate published against the lot number on the box.

What a certificate covers. Identity, purity and mass, measured by HPLC-MS. Each certificate is published against the lot number printed on the box, so the document and the material in front of you refer to the same batch. Read the full method →

Published results

Recently tested lots

All lots →

Each row links to that lot's published results.

Recently tested lots and their certificates
LotMaterialPurityResults
CL-2607-RETA60-ARetatrutide 60mg99.74%Results →
CL-2607-RETA30-BRetatrutide 30mg99.74%Results →
CL-2607-RETA10-CRetatrutide 10mg99.74%Results →
CL-2608-TIRZ30-ATirzepatide 30mg99.28%Results →
CL-2608-TIRZ15-ATirzepatide 15mg99.28%Results →

Catalog

Current research materials

Filter & sort the catalog →

All 18 materials, lowest price first. Prices are per single vial with the 10-vial kit alongside, and each shows its cost per milligram so vial sizes can be compared directly.

Service area

Southwest Florida pickup & delivery

Causa Labs ships nationwide from a United States warehouse. For researchers in Southwest Florida, local pickup and delivery are available in:

  • Cape Coral
  • Fort Myers
  • Punta Gorda
  • Lehigh Acres

More on local supply →