Human TNFSF13(Tumor Necrosis Factor Ligand Superfamily, Member 13) ELISA Kit
Size: Price:
48 T $320.00
96 T $458.00


Product name: Human TNFSF13(Tumor Necrosis Factor Ligand Superfamily, Member 13) ELISA Kit
Reactivity: Human
Alternative Names: CD256; APRIL; TALL2; TRDL1; ZTNF2; A Proliferation Inducing Ligand; TNF And APOL Related Leukocyte Expressed Ligand 2; TNF-Related Death Ligand 1
Assay Type: Sandwich
Sensitivity: 16.53 pg/mL
Standard: 3000 pg/mL
Detection Range: 46.88-3000 pg/mL
Sample Type: Serum, plasma, tissue homogenates and other biological fluids
Assay Length: 3.5h
Research Area: CD & Adhesion molecule;Tumor immunity;Infection immunity;
Uniprot ID: O75888
Test principle: The test principle applied in this kit is Sandwich enzyme immunoassay. The microtiter plate provided in this kit has been pre-coated with an antibody specific to Human TNFSF13. Standards or samples are added to the appropriate microtiter plate wells then with a biotin-conjugated antibody specific to Human TNFSF13. Next, Avidin conjugated to Horseradish Peroxidase (HRP) is added to each microplate well and incubated. After TMB substrate solution is added, only those wells that contain Human TNFSF13, biotin-conjugated antibody and enzyme-conjugated Avidin will exhibit a change in color. The enzyme-substrate reaction is terminated by the addition of sulphuric acid solution and the color change is measured spectrophotometrically at a wavelength of 450nm ± 10nm. The concentration of Human TNFSF13 in the samples is then determined by comparing the OD of the samples to the standard curve.

Standard curve

Concentration (pg/mL) OD Corrected OD
3000.00 2.216 2.108
1500.00 1.647 1.539
750.00 0.935 0.827
375.00 0.752 0.644
187.50 0.453 0.345
93.75 0.262 0.154
46.88 0.226 0.118
0.00 0.108 0.000


Intra-assay Precision (Precision within an assay):CV%<8%

Three samples of known concentration were tested twenty times on one plate to assess intra-assay precision.

Inter-assay Precision (Precision between assays):CV%<10%

Three samples of known concentration were tested in forty separate assays to assess inter-assay precision.


Matrices listed below were spiked with certain level of recombinant TNFSF13 and the recovery rates were calculated by comparing the measured value to the expected amount of TNFSF13 in samples.
Matrix Recovery range Average
serum(n=5) 87-99% 93%
EDTA plasma(n=5) 82-97% 90%
Heparin plasma(n=5) 88-106% 97%


The linearity of the kit was assayed by testing samples spiked with appropriate concentration of TNFSF13 and their serial dilutions. The results were demonstrated by the percentage of calculated concentration to the expected.
Matrix 1:2 1:4 1:8 1:16
serum(n=5) 88-102% 87-102% 85-96% 87-101%
EDTA plasma(n=5) 88-101% 85-93% 89-97% 85-94%
Heparin plasma(n=5) 87-96% 92-105% 89-102% 92-101%