A clearer view of research suppliers. Evidence first. Always.
PepSonar
US · EnglishOur methodology ↗
Nina Fischer
PEPSONAR EDITORIAL PROFILE

Nina Fischer

Peptide Quality & Evidence Editor

I focus on peptide quality documentation, third-party testing, and the science behind product claims. I help readers understand COAs, research limitations, and the warning signs that deserve a closer look.

Editorial focus

Certificates of analysisTesting methodsEvidence limitations
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EXPLORE THIS EDITORIAL AREA

Useful places to start.

Guides, profiles and resources related to Nina’s editorial focus.

PEPSONAR RESOURCE

Analytical testing laboratories

RESEARCH GUIDE

How to read a peptide certificate of analysis

RESEARCH GUIDE

HPLC and LC–MS: different questions, complementary evidence

RESEARCH GUIDE

Purity, identity and sterility are separate questions

RESEARCH GUIDE

How to verify a laboratory report

PEPSONAR RESOURCE

Janoshik: documentation and service profile

Publisher-supplied editorial profile. Read our editorial policy for the scope of our sources and assessments.