- Detection method: Colorimetric method
Reduced glutathione (GSH) can react with dithionitrobenzoic acid (DTNB) to produce thio-nitrobenzoic acid and glutathione disulfide. Nitromercaptobenzoic acid is a yellow compound which has the maximum absorption peak at 420 nm. The GSH content can be calculated by measuring the OD value at 420 nm.
Performance characteristics
Synonyms |
GSH |
Sample type |
Serum,plasma,tissue,cells |
Sensitivity |
0.26 mg GSH/L |
Detection range |
0.26-122.8 mgGSH/L |
Detection method |
Colorimetric method |
Assay type |
Quantitative |
Assay time |
50 min |
Precision |
Average inter-assay CV: 2.400%Average intra-assay CV: 1.800% |
Other instruments required |
Micropipettor, Vortex mixer |
Other reagents required |
Normal saline (0.9% NaCl) or PBS (0.01 M, pH 7.4) |
Storage |
2-8℃ |
Valid period |
12 months |
Dilution of sample
It is recommended to take 2~3 samples with expected large difference to do pre-experiment before formal experiment and dilute the sample according to the result of pre-experiment and the detection range ( 0.26-122.8 mg GSH/L).
The recommended dilution factor for different samples is as follows (for reference only):
Sample type
|
Dilution factor
|
Human serum
|
1
|
Mouse serum
|
1
|
10% Mouse brain tissue homogenization
|
1
|
10% Rat liver tissue homogenization
|
1
|
Human plasma
|
1
|
Rat plasma
|
1
|
10% Carrot tissue homogenization
|
1
|
293T supernatant
|
1
|
Note: The diluent is normal saline (0.9% NaCl) or PBS (0.01 M, pH 7.4).