ExoTEST™ Ready to Use Kit for Tumor-derived Exosome enrichment and quantification from Biological fluids (transparent plate, with lyophilized exosomes from COLO1 cells)

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ExoTEST™ is a sandwich enzyme-linked immunoassay for in-vitro exosome quantification in human serum, plasma and urine.


Sample type

Plasma, serum, urine.

Starting material

Up to 100 µL of biological sample can be loaded per well.

Unfractionated plasma sample can be directly used for capture.

Concentrated urine samples are recommended prior capture according to our suggested protocol.

Assay type

Sandwich enzyme-linked immunoassay.


The detection limit of an assay is lower than 0.35 μg of overall exosome which is an equivalent of less than 50 pg of targeted exosomes protein.

Product overview

ExoTEST™ Ready to Use Kit is the ideal platform for capturing and the quantifying exosomes from biological samples such as plasma, serum, urine and cell culture supernatant. 

ExoTEST™ Ready to Use Kit features pre-coated ELISA plate with primary antibodies detection directed against exosome-specific markers, namely α-CD9. Secondary antibodies and substrate reagents are included in the kit.

Exosome standards for assay calibration are also included in the kit. Exosome standards are purified by ultracentrifugation and microfiltration, quantified for overall protein content and exosome number and then lyophilized for long-term storage.

ExoTEST™ ready to use kits are reliable, easy to use, works on a variety of commercially available detection technologies.

Primary antibody

α-CD9 murine antibody.

Exosome standard

Lyophilized exosomes from COLO-1 Cell culture supernatant (see details).

Assay protocol

Kit contains all the reagents necessary for exosome capture and protein targeted detection (see Product Insert)

Assay calibration: Kit contains exosome standards for assay calibration. Dependend on the sample type used, kit may include human plasma or urine exosomes. All exosome standards are lyophilized and quantified for overall protein content and exosomes number.

This standards enable both absolute and relative quantification exosomes in analyzed samples.

Shipment and storage

All the reagent are shipped at 4°C and storage conditions as recommended in the product insert.

Expiration date

12 months.