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No decrease of the fluorescent signal after using a specific inhibitor
Inhibitor concentration is too low or too high. Very low doses of inhibitor may not affect ROS production by inducer.…
Tue, Jul 18, 2023
Low or no fluorescent signal in positive control
Species of interest may react with each other, thus attenuating the expected signal. ROS is a complex interacting system. Blocking…
Tue, Jul 18, 2023
Can I use the COX activity kit to distinguish between COX-1 and -2?
The COX Activity kits measure activity alone, distinguishing between COX-1 or -2. In order to differentiate between the two enzymes,…
Tue, Jul 18, 2023
More than one aggregation peak is observed.
A protein might have multiple domains that start aggregation at different temperatures. For most samples, any aggregation is an indication…
Tue, Jul 18, 2023
Immunoassay Kits Glossary
Alkaline phosphatase: (1) a phosphatase enzyme found in high concentrations in bone, liver, kidneys, and placenta, is active in an…
Tue, Jul 18, 2023
Insulin does not go into solution.
Insulin was not reconstituted in deionized water prior to dilution. Resuspend Insulin in deionized water before dilution into PBE Buffer.
Tue, Jul 18, 2023
What type of media is best for use in ADI-907-012 and ADI-907-015 H2O2 assays?
Media containing phenol red as a pH indicator will interfere in the assay. Most media are available with this removed…
Tue, Jul 18, 2023
High fluorescence signal observed in negative control
Sample contains interfering substances. The assay is compatible with commonly used buffers (PBS, Tris, HEPES) and excipients (trehalose and sucrose),…
Tue, Jul 18, 2023
Poor signal observed in the assay
Staining reagent has been exposed to strong light. Protect reagents from exposure to strong light.
Tue, Jul 18, 2023
High fluorescent signal at start of run
Protein formed aggregates before the run started. Use a different buffer or additive. Gain setting is too high. Many thermocyclers…
Tue, Jul 18, 2023