Human anti-2019 nCoV (N+S) IgM ELISA Kit

Mfr.No.

EH4944

Sensitivity

0.469ng/ml

Detection Range

0.781-50ng/ml

Reactivity

Human

Assay Duration

1.5 hours

Assay Type

Indirect

Description

This kit is based on indirect ELISA detection method and takes 3h assay time. The microplate provided in this kit has been precoated with antigen. HRP-antibody is used as detection antibody. Add standard and properly diluted sample into relevant well respectively. After incubation, wash unbound components. Add HRP-detection antibody, then it binds with anti-2019 nCoV (N+S) IgM bound to precoated antibody. Wash unbound components and add TMB substrate solution. Then, TMB was catalyzed by HRP to produce a blue color product that turned yellow after adding a stop solution. Read the O.D. absorbance at 450nm in a microplate reader. Calculate the concentration of anti-2019 nCoV (N+S) IgM in the sample by plotting standard curve. The concentration of the target substance is proportional to the OD450 value.

Alternative Names

SARS-CoV-2(N+S) IgM ELISA Kit

Recovery

Add a certain amount of anti-2019 nCoV (N+S) IgM into the sample. Calculate the recovery by comparing the measured value with the expected amount of anti-2019 nCoV (N+S) IgM in the sample.

Sample Type	Recovery Range(%)	Average(%)
serum(n=10)	85-105	95
EDTA plasma(n=10)	86-104	97
Heparin plasma(n=10)	88-96	93

Linearity

Dilute the sample with a certain amount of anti-2019 nCoV (N+S) IgM at 1:2, 1:4 and 1:8 to get the recovery range.

Sample Type	1:2	1:4	1:8
serum(n=10)	85-96%	90-100%	85-98%
EDTA plasma(n=10)	83-96%	83-91%	84-100%
Heparin plasma(n=10)	88-99%	82-100%	81-95%

Specificity

Specifically binds with anti-2019 nCoV (N+S) IgM , no obvious cross reaction with other analogues.

Standard Curve

This product is detected by QC department and meets performance required in the manual. (Laboratory Humidity: 20%-60%; Temperature: 18°C -25°C; Equilibrate TMB substrate to 37°C before staining. After adding into the ELISA wells, incubate for 15min at 37°C in dark.) Due to different assay environments and operations, assay data below and standard curve are provided for reference. Experimenters should establish standard curve according to their own assay.

STD.(ng/ml)	OD-1	OD-2	Average
0	0.05	0.053	0.051
0.781	0.124	0.131	0.127
1.562	0.236	0.248	0.241
3.125	0.378	0.398	0.386
6.25	0.595	0.625	0.607
12.5	0.919	0.966	0.938
25	1.439	1.512	1.468
50	2.082	2.188	2.124

Precision

Intra-assay Precision: samples with low, medium and high concentration are tested 20 times on the same plate.
Inter-assay Precision: samples with low, medium and high concentration are tested 20 times on three different plates.

Item	Intra-assay Precision			Inter-assay Precision
Sample	1	2	3	1	2	3
n	20	20	20	20	20	20
Mean (ng/ml)	1.47	6.23	24.05	1.53	5.84	23.7
Standard deviation	0.06	0.31	1.31	0.08	0.28	1.23
CV(%)	4.39	4.98	5.43	5.42	4.82	5.2

Stability

Perform the stability test for the sealed kit at 37°C and 2-8°C and get relevant data.

ELISA kit(n=5)	37°C for 1 month	2-8°C for 6 months
Average(%)	80	95-100

Notes

For Research Use Only

Usage Notes

Step 1:
Take out the required plate wells, add 50ul Cap/Det Ab into each well, then add 50ul Standard or Sample into individual well. (When adding standard or sample, the disposable tip lightly touches the liquid level. Change the disposable tips for different samples and standards.) Gently tap the plate for 10s to ensure thorough mixing then static incubate for 60 minutes at 37°C.

Washing:
Wash the plate twice without immersion.

Step 2:
Add 100ul HRP-Streptavidin (orange) into each well, seal the plate and static incubate for 30 minutes at 37°C.

Washing:
Wash the plate five times without immersion.

Step 3:
Add 90ul TMB substrate solution, seal the plate and static incubate for 10-20 minutes at 37°C. (Accurate TMB visualization control is required.)

Step 4:
Add 50ul stop solution. Read at 450nm immediately and calculate.

Applications	ELISA
Applications Notes	anti-2019 nCoV IgM ELISA Kit allows for the in vitro quantitative determination of anti-2019 nCoV(N+S) IgM concentrations in serum, plasma, tissue homogenates and other biological fluids.

Storage	2-8°C(Sealed), Don't cryopreserve.

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SKU	Supplier No.	Size	Your price	Quantity
BHE10807967	EH4944	48T	$280		Add to Cart
BHE10807967	EH4944	96T	$400		Add to Cart

Human anti-2019 nCoV (N+S) IgM ELISA Kit

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