Intended use
This immunoassay kit allows for the in vitro quantitative determination of General 5HIAA concentrations in serum, Plasma, tissue homogenates and Cell culture supernates and Other biological fluids.
Test principle
The ELISA is based on the competitive binding enzyme immunoassay technique. The microtiter plate provided in this kit has been pre-coated with an antibody specific to General 5HIAA, During the reaction, General 5HIAA in the sample or standard competes with a fixed amount of biotin-labeled General 5HIAA for sites on a pre-coated Monoclonal antibody specific to General 5HIAA. Excess conjugate and unbound sample or standard are washed from the plate. Next, Avidin conjugated to Horseradish Peroxidase (HRP) is added to each microplate well and incubated. Then a TMB substrate solution is added to each well. The enzyme-substrate reaction is terminated by the addition of a sulphuric acid solution and the color change is measured spectrophotometrically at a wavelength of 450 nm ± 2 nm. The concentration of General 5HIAA in the samples is then determined by comparing the O.D. of the samples to the standard curve.

Precision

Intra-assay Precision (Precision within an assay):Three samples of known concentration were tested twenty times on one plate to assess intra-assay precision.

Intra-Assay CV: 6.9%

Inter-assay Precision (Precision between assays):Three samples of known concentration were tested in five separate assays to assess inter-assay precision.

Inter-Assay CV: 10.4%

Recovery

Recovery was determined by spiking various levels of 5-Hydroxyindoleacetic acid into serum and plasma.

Sample Type	Average(%)	Recovery Range(%)
Serum	100	94-106
Plasma	102	96-108

 

 

 

 

Linearity

The linearity of the kit was assayed by testing samples spiked with appropriate concentration of 5-Hydroxyindoleacetic acid and their serial dilutions. The results were demonstrated by the percentage of calculated concentration to the expected.

Sample	1：2	1:4	1:8	1:16
serum(n=5)	80-91%	103-113%	114-114%	100-110%
EDTA plasma(n=5)	101-110%	93-103%	91-100%	109-119%
heparin plasma(n=5)	105-115%	109-119%	87-99%	107-117%

 

General Annotation

Function:

5-Hydroxyindoleacetic acid (5-HIAA) is the main metabolite of serotonin in the human body. In chemical analysis of urine samples, 5-HIAA is used to determine the body's levels of serotonin.

 

 

Sequence:C10H9NO3

 

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