This kit is shipped on ice. Upon receiving, please store the kit at -20°C. Urease can be stored at -20°C to 4°C.
Yes, unused reagents can be stored according to the assay protocol. Repeated freeze/thaw cycles of reagents should be avoided. The dried NADH Reagent is stable for 3 weeks after reconstitution.
High glutamate concentrations (> 2 mM) will interfere with the assay. For example a typical concentration of glutamate in cell culture medium is ~0.15 mM.
This assay measures the decrease in OD at 340 nm and the color change is not visible to the naked eye.
Duarte, N. T. et al (2020). Prevalence of sublingual varices in patients with cirrhosis and the correlation with nitrogen compounds. Oral surgery, oral medicine, oral pathology and oral radiology, 129(1), 39-44. Assay: urea in human saliva and blood.
To find more recent publications, please click here.
If you or your labs do not have the equipment or scientists necessary to run this assay, BioAssay Systems can perform the service for you.
– Fast turnaround
– Quality data
– Low cost
Please email or call 1-510-782-9988 x 2 to request assay service.
For orders of 10 or more kits, please call +1-510-782-9988×1 or email us for best pricing and/or bulk order.
Orders are shipped the same day if placed by 2pm PST
Shipping: On Ice
Delivery: 1-2 days (US), 3-6 days (Intl)
Storage: -20°C upon receipt
Technical support provided by the very scientists that develop the assays.
Products are extensively tested and validated prior to release so researchers need little-to-no time for assay optimization.
Because we develop and manufacture the products, our prices are lower than competitors on the market
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