Summary:

 

Purpose

Our Quick Step Human Complement Component 4D (C4D)ELISA Kit is to assay C4D levels in Human serum, plasma, culture media or any biological fluid.

 

Principle

This ELISA kit uses Sandwich-ELISA as the method. The Microplate provided in this kit has been pre-coated with an antibody specific to C4D, make it to solid-phase antibody.Samples are added to the Microplate wells and combined to the specific antibody. Then a Horseradish Peroxidase (HRP)-conjugated antibody specific for C4D is added to each Microplate well and incubated,so the antibody-antigen-Enzyme labeled antibody complex is formed.Following a wash to remove any unbound reagent,then the TMB substrate solution is added to each well. Only those wells that contain C4D and HRP conjugated C4D antibody will appear blue in color and then turn yellow after the addition of the stop solution. The optical density (OD) is measured spectrophotometrically at a wavelength of 450 nm. The qualitative determination of C4D is determined by comparing with the CUT OFF value.

Typical Data

The standard curve of QS2336Hu is provided for demonstration only. A standard curve should be generated for each set of samples assayed. 

 

Standard	Concentration	OD Value	Average OD Value
Blank Well	0ng/ml	0.060	0.0560
		0.052
S1	7.2ng/ml	1.960	1.9575
		1.955
S2	4.8ng/ml	1.292	1.2875
		1.283
S3	2.4ng/ml	0.701	0.7045
		0.708
S4	1.2ng/ml	0.391	0.3920
		0.393
S5	0.6ng/ml	0.212	0.2045
		0.197

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