A sensitive, robust high-throughput electrochemiluminescence assay for rat insulin

Area of Science:

• Biomedical research
• Assay development
• Diabetes research

Background:

• Accurate insulin quantification in rodent models is crucial for diabetes research.
• Existing radioimmunoassay and ELISA kits for mouse/rat insulin measurement have reliability concerns.
• Need for a robust and sensitive assay for rodent insulin levels.

Purpose of the Study:

• To develop and validate a highly sensitive and reliable electrochemiluminescence (ECL) assay for quantifying insulin in rodent serum.
• To evaluate the performance characteristics of the novel ECL assay.

Main Methods:

• Development of an electrochemiluminescence (ECL) assay using the Origen technology platform.
• Validation of the assay using rodent serum samples.
• Assessment of assay performance metrics including Z' value, signal-to-background ratio, intra-assay and inter-assay variation, dynamic range, and recovery.

Main Results:

• The ECL assay demonstrated robust performance with a Z' value of 0.82+/-0.03 and a signal-to-background ratio of 133.
• Intra-assay and inter-assay variation were consistently below 5%.
• The assay exhibited a wide dynamic range (5 pg to 5 ng) and approximately 100% recovery of spiked insulin.

Conclusions:

• The developed ECL insulin assay is extremely sensitive, robust, and nonradioactive.
• This homogeneous assay provides a reliable method for determining insulin levels in rodent serum samples.
• The ECL assay is suitable for use in diabetes research involving mouse and rat models.