Ammonia/Ammonium Assay Kit, BioAssay(TM)

Produktübersicht

• Artikelname: Ammonia/Ammonium Assay Kit, BioAssay(TM)
• Artikelnummer: USB-A1383-57
• Hersteller Artikelnummer: A1383-57
• Alternativnummer: USB-A1383-57-96
• Hersteller: US Biological
• Kategorie: Kits/Assays

Produktbeschreibung

Ammonia (NH3) or its ion form ammonium (NH4+) is an important source of nitrogen for living systems. It is synthesized through amino acid metabolism and is toxic when present at high concentrations. In the liver, ammonia is converted to urea through the urea cycle. Elevated levels of ammonia in the blood (hyperammonemia) have been found in liver dysfunction (cirrhosis), while hypoammonemia has been associated with defects in the urea cycle enzymes (e.g. ornithine transcarbamylase). Simple, direct and automation-ready procedures for measuring NH3 are popular in research and drug discovery. Ammonia assay is designed to directly measure NH3 and NH4+. In this assay, NADH is converted to NAD+ in the presence of NH3, ketoglutarate and glutamate dehydrogenase. The decrease in optical density at 340nm or fluorescence intensity at lambdaem/ lambdaex=450/360 nm is directly proportionate to the NH3 concentration in the sample. Key Features: High sensitivity and wide linear range: Use 20ul sample. Linear detection range 24-1000uM ammonia. Homogeneous and simple procedure: Simple ''mix-and-measure procedure allows reliable quantitation of NH3 within 30 minutes. Applications: Direct Assays: NH3 in biological samples (e.g. serum, plasma, urine, saliva, cell culture etc). Kit Components: (96-well plate) A1383-57A: Assay Buffer, 1x20ml A1383-57B: Enzyme, 1x120ul A1383-57C: Ketogutarate, 1x120ul A1383-57D: Standard, 1x400ul A1383-57E: NADH Reagent (Lyophilized), 1x1ml Storage and Stability: Store components at -20C. Stable for 6 months after receipt. For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap.