Multiplex Assay Kit for Tumor Necrosis Factor Ligand Superfamily, Member 13 (TNFSF13) ,etc. by CBA (Cytometric Bead Array)

CD256; APRIL; TALL2; TRDL1; ZTNF2; A Proliferation Inducing Ligand; TNF And APOL Related Leukocyte Expressed Ligand 2; TNF-Related Death Ligand 1

Specificity

This assay has high sensitivity and excellent specificity for detection of Tumor Necrosis Factor Ligand Superfamily, Member 13 (TNFSF13) ,etc. by CBA (Cytometric Bead Array).
No significant cross-reactivity or interference between Tumor Necrosis Factor Ligand Superfamily, Member 13 (TNFSF13) ,etc. by CBA (Cytometric Bead Array) and analogues was observed.

Recovery

Matrices listed below were spiked with certain level of recombinant Tumor Necrosis Factor Ligand Superfamily, Member 13 (TNFSF13) ,etc. by CBA (Cytometric Bead Array) and the recovery rates were calculated by comparing the measured value to the expected amount of Tumor Necrosis Factor Ligand Superfamily, Member 13 (TNFSF13) ,etc. by CBA (Cytometric Bead Array) in samples.

Matrix Recovery range (%) Average(%)
serum(n=5) 78-99 85
EDTA plasma(n=5) 96-105 101
heparin plasma(n=5) 85-101 92

Precision

Intra-assay Precision (Precision within an assay): 3 samples with low, middle and high level Tumor Necrosis Factor Ligand Superfamily, Member 13 (TNFSF13) ,etc. by CBA (Cytometric Bead Array) were tested 20 times on one plate, respectively.
Inter-assay Precision (Precision between assays): 3 samples with low, middle and high level Tumor Necrosis Factor Ligand Superfamily, Member 13 (TNFSF13) ,etc. by CBA (Cytometric Bead Array) were tested on 3 different plates, 8 replicates in each plate.
CV(%) = SD/meanX100
Intra-Assay: CV<10%
Inter-Assay: CV<12%

Linearity

The linearity of the kit was assayed by testing samples spiked with appropriate concentration of Tumor Necrosis Factor Ligand Superfamily, Member 13 (TNFSF13) ,etc. by CBA (Cytometric Bead Array) and their serial dilutions. The results were demonstrated by the percentage of calculated concentration to the expected.

Sample 1:2 1:4 1:8 1:16
serum(n=5) 84-101% 98-105% 92-99% 78-99%
EDTA plasma(n=5) 90-104% 85-101% 97-105% 80-88%
heparin plasma(n=5) 78-89% 80-91% 87-97% 85-105%

Stability

The stability of kit is determined by the loss rate of activity. The loss rate of this kit is less than 5% within the expiration date under appropriate storage condition.
To minimize extra influence on the performance, operation procedures and lab conditions, especially room temperature, air humidity, incubator temperature should be strictly controlled. It is also strongly suggested that the whole assay is performed by the same operator from the beginning to the end.

Reagents and materials provided

Reagents Quantity Reagents Quantity

Assay procedure summary

1. Add 200μL analysis buffer solution to each well of the plate for pre-wetting;
2. Preparation of standards, reagents and samples before the experiment;
3. Add 100μL standard or sample to each well, add 10μL magnetic beads, and incubate 120 minutes protect from light at 25°C on shaker;
4. Remove liquid on magnetic frame, add 100μL prepared Detection Reagent A. Incubate 60 minutes protect from light at 25°C on shaker;
5. Remove liquid on magnetic frame, add 100μL prepared Detection Reagent B, and incubate 30 minutes protect from light at 25°C on shaker;
6. Wash plate once on magnetic frame;
7. Add 100μL sheath fluid, swirl for 10 minutes, read on the machine.

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Magazine Citations
Journal of Critical Care Serum concentrations of A Proliferation-Inducing Ligand (APRIL) are elevated in sepsis and predict mortality in critically ill patients PubMed: 23337484
Haematologica Arrayed molecular barcoding identifies TNFSF13 as a positive regulator of acute myeloid leukemia-initiating cells Pubmed: 30819903
Gene A Significant Decrease of BAFF, APRIL, and BAFF Receptors Following Mesenchymal Stem Cell Transplantation in Patients with Refractory Rheumatoid Arthritis Pubmed: 31935514