DESCRIPTION

MAGEA4 is a member of the MAGEA family, which belongs to chromosome X-clustered cancer/testis antigens. MAGEA4 is expressed in various human cancers but not in normal tissues besides the testis. High expression of MAGE-A4 in tumors was correlated with poor prognosis in many tumor types.

PRINCIPLE OF THE ASSAY

Sandwich ELISA structure (Detection antibody labeled with HRP) A capture antibody is pre-coated onto the bottom of wells which binds to analyte of interest. A detection antibody labeled with HRP also binds to the analyte. TMB acts as the HRP substrate and the solution color will change from colorless to blue. A stop solution containing sulfuric acid turns solution yellow. The color intensity is proportional to the quantity of bound protein which is measurable at 450 nm with the correction wavelength set at 630 nm.

PRECISION

Intra-assay Precision (Precision within an assay) Three samples of known concentration were tested 8 times on one plate to assess intra-assay precision. Inter-assay Precision (Precision between assays) Three samples of known concentration were tested in 16 separate assays to assess inter-assay precision.

Intra-assay Precision

Sample	n	Mean (pg/mL)	SD	CV%
1	8	2,691.5	154.1	5.7
2	8	703.1	20.1	2.9
3	8	211.8	8.8	4.2

Inter-assay Precision

Sample	n	Mean (pg/mL)	SD	CV%
1	16	2,610.6	171.2	6.6
2	16	681.1	44.5	6.5
3	16	207.1	9.2	4.4

RECOVERY

The recovery of human MAGEA4 spiked to three different levels throughout the range of the assay in various matrices was evaluated.

Sample Type		Average% of Expected	Range (%)
Human serum	1:8	76	72-82
Cell lysate	1:640	103	93-114

LINEARITY

To assess the linearity of the assay, samples were diluted with the appropriate Sample Diluent to produce samples with values within the dynamic range of the assay. (The cell lysate was initially diluted 1:40. )

		Human serum	Cell lysate
1:2	Average% of Expected	100	100
	Range (%)	-	-
1:4	Average% of Expected	121	90
	Range (%)	119-123	78-103
1:8	Average% of Expected	112	100
	Range (%)	110-114	83-117
1:16	Average% of Expected	113	103
	Range (%)	112-113	89-118

CALIBRATION

This immunoassay is calibrated against a highly purified recombinant human MAGEA4 produced at Sunlong Medical™.

Ordering & shipping

• Minimum order: 1 kit
• Lead time: varies with order quantity and specifications. Please consult your local distributor or our sales team for confirmation
• Payment: T/T 100% in advance; PayPal; Alibaba Trade Assurance
• Shipping: FedEx / DHL / UPS express; cold-chain packing available on request
• Price: USD, per kit (48T / 96T options available)