Analysis of inter-/intra-E-plate repeatability in the real-time cell analyzer

Area of Science:

• Cell biology
• Biotechnology
• Assay development

Background:

• Real-time cell analyzer (RTCA) is a noninvasive, label-free impedance measuring tool for in vitro cell-based assays.
• Ensuring repeatability and robustness is crucial for maximizing RTCA's value in diverse experimental conditions.

Purpose of the Study:

• To evaluate the performance and variability of RTCA.
• To propose a novel repeatability index (RI) for quantifying intra-/inter-E-plate repeatability.

Main Methods:

• Assessed RTCA performance using six cell lines and two media (water and DMSO).
• Recorded time-dependent cell index (CI) curves and calculated variations.
• Developed a discriminating standard to evaluate repeatability using the RI.

Main Results:

• The proposed RI provides quantitative evaluation of RTCA repeatability within E-plates.
• The index assesses variations across different days and experimental conditions.
• Demonstrated the ability to quantitatively assess RTCA's intra- and inter-E-plate repeatability.

Conclusions:

• The novel repeatability index (RI) offers a quantitative method for assessing RTCA performance.
• This index addresses the need for standardized repeatability evaluation in label-free cell analysis.
• The RI enhances the reliability and comparability of RTCA data across experiments.