Human sVCAM-1/CD106 ELISA Kit

Product Name:	Human sVCAM-1/CD106 (Soluble Vascular Cell Adhesion Molecule 1) ELISA Kit
SKU:	AEES00822
Size:	96 Assays
Detection Method:	Colorimetric method, ELISA, Sandwich
Assay Type:	Sandwich-ELISA
Sensitivity:	1.88 ng/mL
Range:	3.13-200 ng/mL
Reactivity:	Human
Sample Volume:	100 μL
Total Assay Time:	3 h 30 min
Recovery:	80%-120%

Kit Components:

Component	Quantity		Storage
	24T	96T
Micro ELISA Plate (Dismountable)	8 wells x 3 strips	8 wells x 12 strips	-20°C, 12 months
Reference Standard	1 vial	2 vials
Concentrated Biotinylated Detection Ab (100×)	1 vial, 60 µL	1 vial, 120 µL
Concentrated HRP Conjugate (100×)	1 vial, 60 µL	1 vial, 120 µL	-20°C (shading light), 12 months
Reference Standard & Sample Diluent	1 vial, 20 mL	1 vial, 20 mL	4°C, 12 months
Biotinylated Detection Ab Diluent	1 vial, 14 mL	1 vial, 14 mL
HRP Conjugate Diluent	1 vial, 14 mL	1 vial, 14 mL
Concentrated Wash Buffer (25×)	1 vial, 30 mL	1 vial, 30 mL
Substrate Reagent	1 vial, 10 mL	1 vial, 10 mL	4°C (shading light)
Stop Solution	1 vial, 10 mL	1 vial, 10 mL	4°C
Plate Sealer	5 pieces	5 pieces	-
Product Description	1 copy	1 copy	-

This ELISA kit uses the Sandwich-ELISA principle. The micro ELISA plate provided in this kit has been pre-coated with an antibody specific to Human sVCAM-1/CD106. Standards or samples are added to the micro ELISA plate wells and combined with the specific antibody. Then a biotinylated detection antibody specific for Human sVCAM-1/CD106 and Avidin-Horseradish Peroxidase (HRP) conjugate are added successively to each micro plate well and incubated. Free components are washed away. The substrate solution is added to each well. Only those wells that contain Human sVCAM-1/CD106, biotinylated detection antibody and Avidin-HRP conjugate will appear blue in color. The enzyme-substrate reaction is terminated by the addition of stop solution and the color turns yellow. The optical density (OD) is measured spectrophotometrically at a wavelength of 450 nm ± 2 nm. The OD value is proportional to the concentration of Human sVCAM-1/CD106. You can calculate the concentration of Human sVCAM-1/CD106 in the samples by comparing the OD of the samples to the standard curve.

Standard:

Concentration (ng/mL)	OD	Corrected OD
200.0	2.106	2.023
100.0	1.479	1.396
50.0	0.924	0.841
25.0	0.453	0.37
12.5	0.288	0.205
6.25	0.17	0.087
3.13	0.131	0.048
0.0	0.083	-

Linearity:

		Serum (n=5)	EDTA Plasma (n=5)	Cell Culture Media (n=5)
1:2	Range (%)	88-100	89-102	90-103
1:2	Average (%)	93	96	96
1:4	Range (%)	99-112	86-99	95-107
1:4	Average (%)	105	93	100
1:8	Range (%)	98-112	82-95	97-110
1:8	Average (%)	104	87	104
1:16	Range (%)	96-111	83-98	95-108
1:16	Average (%)	102	89	102

Recovery:

Sample Type	Range (%)	Average Recovery (%)
Serum (n=5)	91-103	96
EDTA Plasma (n=5)	89-103	95
Cell Culture Media (n=5)	90-101	95

Precision:

	Intra-assay Precision			Inter-assay Precision
Sample	1	2	3	1	2	3
n	20.0	20.0	20.0	20.0	20.0	20.0
Mean (ng/mL)	9.88	29.91	79.69	10.61	28.04	74.13
Standard deviation	0.58	1.34	4.85	0.64	1.83	5.93
CV (%)	5.88	4.47	6.09	6.04	6.51	8.0

*Note:The below protocol is a sample protocol. Protocols are specific to each batch/lot. For the correct instructions please follow the protocol included in your kit.

Step	Protocol
1.	Set standard, test sample and control (zero) wells on the pre-coated plate and record their positions. It is recommended to measure each standard and sample in duplicate. Note: add all solutions to the bottom of the plate wells while avoiding contact with the well walls. Ensure solutions do not foam when adding to the wells.
2.	Aliquot 100µL of standard solutions into the standard wells.
3.	Add 100µL of Sample / Standard dilution buffer into the control (zero) well.
4.	Add 100µL of properly diluted sample (serum, plasma, tissue homogenates and other biological fluids) into test sample wells.
5.	Cover the plate with the sealer provided in the kit and incubate for 90 min at 37°C.
6.	Aspirate the liquid from each well, do not wash. Immediately add 100µL of Biotinylated Detection Ab working solution to each well. Cover the plate with a plate seal and gently mix. Incubate for 1 hour at 37°C.
7.	Aspirate or decant the solution from the plate and add 350µL of wash buffer to each well and incubate for 1-2 minutes at room temperature. Aspirate the solution from each well and clap the plate on absorbent filter paper to dry. Repeat this process 3 times. Note: a microplate washer can be used in this step and other wash steps.
8.	Add 100µL of HRP Conjugate working solution to each well. Cover with a plate seal and incubate for 30 min at 37°C.
9.	Aspirate or decant the solution from each well. Repeat the wash process five times as conducted in step 7.
10.	Add 90µL of Substrate Reagent to each well. Cover with a new plate seal and incubate for approximately 15 min at 37°C. Protect the plate from light. Note: the reaction time can be shortened or extended according to the actual color change, but not by more than 30min.
11.	Add 50 µL of Stop Solution to each well. Note: Adding the stop solution should be done in the same order as the substrate solution.
12.	Determine the optical density (OD value) of each well immediately with a microplate reader set at 450 nm.

When carrying out an ELISA assay it is important to prepare your samples in order to achieve the best possible results. Below we have a list of procedures for the preparation of samples for different sample types.

Sample Type	Protocol
Serum	Allow samples to clot for 2 hours at room temperature or overnight at 4°C before centrifugation for 15 min at 1000×g at 2~8°C. Collect the supernatant to carry out the assay. Blood collection tubes should be disposable and endotoxin-free.
Plasma	Collect plasma using EDTA or heparin as an anticoagulant. Centrifuge samples for 15 min at 1000×g at 2~8°C within 30 min of collection. Collect the supernatant to carry out the assay. Hemolysed samples are not suitable for ELISA assay.
Cell lysates	For adherent cells, gently wash the cells with pre-cooled PBS and dissociate the cells using trypsin. Collect the cell suspension in a tube and centrifuge for 5 min at 1000×g. Discard the medium and wash the cells 3 times with precooled PBS. For each 1×10⁶ cells, add 150-250µL of pre-cooled PBS to keep the cells suspended. Optimal cell concentration is 1 million/ml. To release cellular components, dilute the cell pellet in PBS and use 3-4 freeze-thaw cycles in liquid Nitrogen (commercial lysis buffers can be used according to manufacturer’s instructions). Centrifuge at 4°C for 20 mins at 2000-3000 rpm to pellet debris and remove clear supernatant to clean microcentrifuge tube for ELISA or storage.
Tissue homogenates	It is recommended to get detailed references from the literature before analyzing different tissue types. For general information, hemolysed blood may affect the results, so the tissues should be minced into small pieces and rinsed in ice-cold PBS (0.01M, pH=7.4) to remove excess blood thoroughly. Tissue pieces should be weighed and then homogenized in PBS (tissue weight (g): PBS (mL) volume=1:9) with a glass homogenizer on ice. To further break down the cells, you can sonicate the suspension with an ultrasonic cell disrupter or subject it to freeze-thaw cycles. The homogenates are then centrifuged for 5 min at 5000×g to get the supernatant.
Cell culture supernatant or other biological fluids	Centrifuge samples for 20 min at 1000×g at 2~8°C. Collect the supernatant to carry out the assay.

Uniport ID:	P19320
Sample Type:	Serum, plasma and other biological fluids
Specificity:	This kit recognizes Human sVCAM-1/CD106 in samples. No significant cross-reactivity or interference between Human sVCAM-1/CD106 and analogues was observed
Storage:	2-8℃
Expiration Date:	12 months
Research Area:	Cancer,Cardiovascular,Signaling Transduction,Neuroscience,Stem Cells