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US domestic vendor

Cernum Biosciences

Researcher-founded US vendor with weekly-refreshed COAs, custom synthesis, and US-only shipping.

Last updated

Scored 7.5 7.5 of 10 overall, across 8 dimensions how scores are derived

Score breakdown

Dimension scores are editorial, carried from the operator's earlier directory — they are not user reviews. Each label links to what the dimension measures.

About Cernum Biosciences

Cernum Biosciences is a US-based research peptide supplier with over six years in operation, built by researchers for researchers. The company offers 99%+ purity peptides with detailed chromatograms and mass spectra from independent laboratories, refreshed weekly and openly available to all customers. Cernum ships exclusively within the United States and offers custom peptide synthesis including modifications, N-terminal protection, and fragment design. The company is praised for purity consistency, packaging quality, and thorough documentation.

Written for the operator's previous directory and reproduced unchanged (markup and emoji stripped); the rest of this site does not share its voice. Ported observed .

From the storefront

No public product feed on file. The storefront exposes no product API we can read without an account, so nothing is shown rather than something guessed.

Catalogue, as their API returns it

Their storefront has no public API we can read, so nothing is shown rather than something guessed. observed

Strengths and weaknesses

Where it does well

  • Weekly-refreshed COAs with full chromatograms

Where it falls short

None recorded.

Carried verbatim from the source directory's editorial review, observed .

Shipping

Destinations
  • United States
Countries Served
United States observed
Domestic Shipping
Varies observed
Estimated Delivery
Domestic: 2-5 business days observed
Free shipping
No
Reship guarantee
Not on file
Refund policy
Not on file

Payments

  • credit-card

Coupons

No current code on file. Codes are published only with the code, the discount, a source and the date we saw it, and expired codes are removed at build — the coupon policy. 0 are on file site-wide today.

Certificates of analysis

Third-party tested
Yes
Publicly accessible
Yes
Test types
  • HPLC
  • Mass Spectrometry
Source's COA tier
third-party

Detailed chromatograms and mass spectra from independent labs. COAs refreshed weekly. Batch-level data openly available. observed

A COA describes one batch's purity. It is a document about a vial, not evidence about an effect, and it never grades a claim on this site — the grading rubric names what qualifies.

Peptides listed 21

Linked names have a record here; the others we hold nothing on yet. A vendor listing a compound says nothing about the evidence for it.

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