Griess reagent system

Supplier: Promega Corporation

G2930
PAG2930EA 252.92 USD
PAG2930
Griess reagent system
Griess reagent

Nitric oxide detection in a variety of biological and experimental liquid matrices.


  • Measures Nitrite, a Primary Breakdown Product of Nitric Oxide
  • Detects nitrate in a variety of types of biological samples


The Griess Reagent System measures nitrite (NO(2)-), which is one of two primary stable and nonvolatile breakdown products of nitric oxide (NO). Nitric oxide is an important physiological messenger and effector molecule in many biological systems, including immunological, neuronal and cardiovascular tissues. This assay relies on a diazotization reaction that was originally described by Griess in 1879. Through the years, many modifications to the original reaction have been described. The Griess Reagent System is based on a chemical reaction that uses sulfanilamide and N-1-naphthylethylenediamine dihydrochloride (NED) under acidic (phosphoric acid) conditions. This system detects NO(2)- in a variety of biological and experimental liquid matrices such as plasma, serum, urine and tissue culture medium. The nitrite sensitivity is dependent on the matrix. The limit of detection is 2.5uM (125pmol) nitrite (in ultrapure, deionized, distilled water) using the protocol described in Technical Bulletin #TB229.


This system detects NO2− in a variety of biological and experimental liquid matrices such as plasma, serum, urine, and tissue culture medium.


This assay relies on a diazotization reaction that was originally described by Griess in 1879. Through the years, many modifications to the original reaction have been described. The Griess Reagent System is based on a chemical reaction that uses sulfanilamide and N-1-naphthylethylenediamine dihydrochloride (NED) under acidic (phosphoric acid) conditions.

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