Related Experiment Video
Updated: Aug 8, 2026

Fluorescent Lateral Flow Immunoassay Based on Quantum Dots Nanobeads
Published on: June 28, 2024
Quantum Dot-Based Fluorescence-Linked Immunosorbent Assays for the Detection of Biomarkers
Yanbing Lv1, Ruili Wu2, Lin Song Li3
1Key Lab for Special Functional Materials of Ministry of Education, and School of Nanoscience and Materials Engineering, Henan University, Kaifeng, 475004, China.
None:
A quantum dot-based fluorescence-linked immunosorbent assay (QD-FLISA) is developed from the traditional enzyme-linked immunosorbent assay (ELISA). In QD-FLISA, quantum dots (QDs) substitute the enzyme, acting as a fluorescent label. The biosensor is built on QD-biomolecule conjugates as it signals to realize quantification through the changes in the photoluminescence (PL) of the QDs. The QD-FLISA platform exhibits high sensitivity, accuracy, and high-throughput analysis capabilities for the qualitative or quantitative detection of specific protein molecules, small molecule toxins, bacteria, or viruses.
Related Concept Videos
Immunofluorescence Microscopy
The...
Enzyme-Linked Immunosorbent Assay
There are many different types of ELISAs, but they all involve an antibody molecule whose constant region binds an enzyme, leaving the variable region free to bind its specific antigen. Enzyme-substrate reaction allows the antigen to be visualized or quantified.

