Simple Plex Human PD-L1/B7-H1 Cartridge

Catalog #: SPCKB-PS-000273 Datasheet / COA / SDS
Simple Plex Cartridge Kit for quantitation of PD-L1/B7-H1. Includes wash buffer and sample diluent SD13. For use with the Ella automated immunoassay system
Catalog # Availability Size / Price Qty
SPCKB-PS-000273
SPCKA-PS-000273
SPCKC-PS-000273
Control Products Available
Human B7-H1 Simple Plex Assay
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Simple Plex Human PD-L1/B7-H1 Cartridge Summary

Assay Type
Automated sandwich ELISA
Format
Microfluidic cartridge containing three Glass Nano Reactors (GNR)
Assay Length
90 minutes
Sample Type & Volume Required Per Well*
Serum (25 uL), EDTA Plasma (25 uL), Heparin Plasma (25 uL)
Sensitivity
3.45 pg/mL
Assay Range
3.5 - 13,172 pg/mL (Serum, EDTA Plasma, Heparin Plasma)
Specificity
Natural and recombinant human B7-H1.
Cross-reactivity
< 0.5% cross-reactivity observed with available related molecules.< 50% cross-species reactivity observed with species tested.
Interference
No significant interference observed with available related molecules.

*The Sample Volume represented is based on the amount of sample incorporated into the reaction after taking into account the assay’s minimum required dilution for a given matrix. Serial dilution may be necessary to achieve some of the final sample volumes represented.

Product Summary

Simple Plex assay for the detection of human B7-H1 in serum and plasma (EDTA/Heparin)

Precision

Intra-Assay Precision (Precision within an assay) Each control was tested 16 times in one assay
Inter-Assay Precision (Precision between assays) Replicates of each control were tested in multiple assays performed by at least three technicians using two lots of reagents

Serum, EDTA Plasma, Heparin Plasma

Intra-Assay Precision Inter-Assay Precision
Sample 1 2 1 2
n 16 16 16 16
Mean (pg/mL) 86.6 4857 88.9 4517
Standard Deviation 4.71 368 8.69 522
CV% 5.4 7.6 9.8 11.6

Recovery

Recovery at three different spiked concentrations within the range of the assay was evaluated.

Sample Type Average % Recovery Range %
EDTA Plasma (n=4) 102 95-108
Heparin Plasma (n=4) 102 94-112
Serum (n=4) 111 108-115

Linearity

Samples containing and/or spiked with high concentrations of human B7-H1 were serially diluted with Sample Diluent to produce samples within the dynamic range of the assay
Human B7-H1 Simple Plex Assay Linearity

Scientific Data

Human B7-H1 Simple Plex Assay Standard Curve

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Preparation and Storage

Shipping
The product is shipped at ambient temperature. Upon receipt, store it immediately at the temperature recommended below.
Storage
Store the unopened product at 2 - 8 °C. Do not use past expiration date.

Background: PD-L1/B7-H1

PD-L1, also known as B7-H1 and CD274, is an approximately 65 kDa transmembrane glycoprotein in the B7 family of immune regulatory molecules. PD-L1 is expressed on inflammatory-activated immune cells including macrophages, T cells, and B cells, keratinocytes, enothelial and intestinal epithelial cells, as well as a variety of carcinomas and melanoma. PD-L1 binds to T cell B7-1/CD80 and PD-1. It suppresses T cell activation and proliferation and induces the apoptosis of activated T cells. It plays a role in the development of immune tolerance by promoting T cell anergy and enhancing regulatory T cell development. PD-L1 favors the development of anti-inflammatory IL-10 and IL-22 producing dendritic cells and inhibits the development of Th17 cells. In cancer, PD-L1 provides resistance to T cell mediated lysis, enhances EMT, and enhances the tumorigenic function of Th22 cells.

Long Name:
Programmed Death Ligand 1
Entrez Gene IDs:
29126 (Human); 60533 (Mouse); 499342 (Rat); 574058 (Porcine); 484186 (Canine); 102145573 (Cynomolgus Monkey)
Alternate Names:
Avelumab; B7-H; B7H1; B7-H1; B7H1PDCD1L1; CD274 antigenMGC142294; CD274 molecule; CD274; PDCD1L1; PDCD1LG1; PDCD1LG1MGC142296; PDL1; PD-L1; PD-L1B7 homolog 1; PDL1PDCD1 ligand 1; programmed cell death 1 ligand 1; Programmed death ligand 1

FAQs

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