Quantify exosome subpopulations — straight from biofluid
Direct, quantitative detection of exosome subpopulations from serum, plasma, and cell culture media. No ultracentrifuge, no upstream isolation — just sample in, particle counts out.
Two tetraspanin-defined subpopulation assays
Run either kit alone, or both together to profile complementary CD9⁺ and CD81⁺ exosome subsets from the same sample set.
Human Exosome ELISA Kit (CD9⁺)
Quantifies CD9-positive exosomes directly from native biofluids
— no separate isolation step, minimizing EV loss across the workflow.
- ✓ Particle-based quantification of CD9⁺ subpopulation
- ✓ Sensitivity ≈ 1.91 × 10⁶ particles/mL (LLOD)
- ✓ Validated in serum, EDTA plasma & cell culture media
- ✓ Lyophilized, pure, NTA-characterized LNCaP-derived exosome control standard
Human Exosome ELISA Kit (CD81⁺)
Quantitative sandwich ELISA for CD81⁺ exosomes in cell culture supernatants, serum, plasma, and purified EV preparations — for characterization, biomarker studies, and QC of EV isolation methods.
- ✓ Detects intact CD81⁺ vesicles, not free CD81 protein
- ✓ Sensitivity ≈ 4.67 × 10⁶ particles/mL (LLOD)
- ✓ Serum, plasma, cell culture media & purified EVs
- ✓ Lyophilized, pure, NTA-characterized MCF-7-derived exosome control standard
Coming soon Expanding subpopulation detection — EpCAM⁺, NCAM1⁺, and L1CAM⁺ exosome ELISA kits for tumor- and neuron-derived EV studies.
Validated data for both kits
Each kit is calibrated with an 8-point LNCaP- or MCF-7–derived exosome standard curve and characterized for sensitivity, recovery, and reproducibility. Select a kit to view its data.
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Both kits: sandwich ELISA, OD450 readout, ~3–5 hr assay (capture step extendable overnight at 4 °C). Linearity on dilution within ~90–110% of expected across plasma, serum, and cell-culture media.
