Interleukin 4 (IL4) BioAssay ELISA Kit (Human)

£848.00 96 Tests

Interleukin 4 (IL4) BioAssay ELISA Kit (Human) is a sandwich enzyme immunoassay for in vitro quantitative measurement of IL4 in human serum, plasma, tissue homogenates, cell lysates, cell culture supernates and other biological fluids.

Additional information

Detection Range





Intra-Assay CV:
< 10%

Inter-Assay CV:
< 12%

Kit Components

*026230A: Microtiter Strips, 1×96 wells, Pre-coated, ready to use
*026230B: Standard, 2x1vial
026230C: Standard Diluent, 1x20ml
*026230D: Detection Reagent A, 1x120ul
*026230E: Detection Reagent B, 1x120ul
026230F: Assay Diluent A, 1x12ml
026230G: Assay Diluent B, 1x12ml
026230H: TMB Substrate, 1x9ml
*026230J: Positive Control, 446.6pg/ml, 1x1vial
026230K: Stop Solution, 1x6ml
026230L: Wash Buffer, 30X, 1x20ml


The Stop Solution (026230K) included for use with this kit is an acid solution. Wear eye, hand, face, and clothing protection when using this material.

Storage and Stability

Store *026230A, *026230B, *026230D, *026230E and *026230J at -20?C. After reconstitution of *026230J, store at 4?C and use within 5 days. Store all the other components at 4?C. Unused kit is stable for 6 months. Once kit components are opened, it is highly recommended to use remaining reagents within 1 month provided this is within the expiration date of the kit. For maximum recovery of product, centrifuge the original vials after thawing and prior to removing the cap.

Assay Procedure Summary

1. Prepare all reagents, samples and standards.
2. Add 100ul standard or sample to each well. Incubate 2 hours at 37?C.
3. Aspirate and add 100ul prepared Detection Reagent A. Incubate 1 hour at 37?C.
4. Aspirate and wash 3 times.
5. Add 100ul prepared Detection Reagent B. Incubate 30 minutes at 37?C.
6. Aspirate and wash 5 times.
7. Add 90ul Substrate Solution. Incubate 15-25 minutes at 37?C.
8. Add 50ul Stop Solution. Read at 450nm immediately.

Source Antigen




Shelf Life

6 Months