
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

Glossary
Antibody: An immunoglobulin that recognizes some portion of an antigen molecule. The antibody contains a species-specific Fc region and antigen-specific…
Tue, Jul 18, 2023

Can whole blood samples be used?
High background may result from the presence of hemoglobin in your sample. Hemoglobin (Hb) has a significant absorption at 340…
Tue, Jul 18, 2023

My first assay for total glutathione worked well, but when I repeated the assay to test the oxidized samples, the curve was essentially flat-to-negative.
Oxidized glutathione is very difficult to detect because it is rapidly turned over and converted, so there is only a…
Tue, Jul 18, 2023

Why and how should I treat my samples and the standard with 4-Vinylpyridine (4-VP)?
In order to measure oxidized glutathione (GSSG), you must eliminate GSH in the cell extract by treating with 4-VP, a…
Tue, Jul 18, 2023

What is the purpose of treating samples with 5% metaphosphoric acid (MPA)?
MPA should be added to fresh samples prior to sample handling or sample storage. That is required to deproteinize samples…
Tue, Jul 18, 2023

What is the principle of the Glutathione (GSSG/GSH) assay?
The Glutathione (total), detection kit is a complete kit that allows the determination of total, reduced, and oxidized glutathione concentrations…
Tue, Jul 18, 2023

Will the cytokine ELISA kits from one species work with another species?
This will depend on the species homology. Human cytokine ELISA kits will generally not measure cytokines in other species. Mouse…
Tue, Jul 18, 2023

What can interfere with the assay?
Reducing agents (such as ascorbic acid, beta-mercaptoethanol, dithiothreitol, and cysteine) and thiol reactive compounds (such as maleimides) are known to…
Tue, Jul 18, 2023

Nuclear counterstain is too bright compared to the organelle stain.
Different microscopes, cameras and filters may make some signals appear very bright. Reduce the concentration of the nuclear counterstain or…
Tue, Jul 18, 2023