KEIFEI Knowledge

Field notes on authenticity,
testing & handling.

Plain, factual reference material on how genuine KEIFEI product is verified, tested, and handled. No claims, no advice — just the information that helps you tell real from counterfeit.

A genuine KEIFEI T-ENTBOLIN 250 box beside its injection vial
Authenticity

The four checks that confirm a genuine KEIFEI product

Lot number, embossed cap, branded box, and a lot-matched Certificate of Analysis. What each one is, and what a counterfeit gets wrong.

16 Jun 20266 min read
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A KEIFEI vial resting on a Certificate of Analysis with a chromatogram
Testing

How to read a Certificate of Analysis

Identity, assay, impurities, lot number, lab signature. A line-by-line guide to what a real COA tells you — and how to verify it.

14 Jun 20267 min read
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KEIFEI vials on a temperature-controlled shelf under cold-chain conditions
Handling

Storage, handling & the cold chain

Why injectables and orals are stored differently, what the cold chain protects, and how to read storage and expiry on the label.

12 Jun 20266 min read
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These notes are published for information only. KEIFEI compounds are supplied for research and analytical use only — not for human or animal consumption. Nothing here is medical, dosing, or usage guidance.