Smartphone integrated handheld (SPEED) digital polymerase chain reaction device

Area of Science:

• Biotechnology
• Molecular Diagnostics
• Point-of-Care Testing

Background:

• Digital polymerase chain reaction (dPCR) offers high precision for molecular diagnostics.
• Current dPCR systems are often large, expensive, and not suitable for point-of-care applications.

Purpose of the Study:

• To develop and validate a smartphone-integrated handheld digital polymerase chain reaction (dPCR) device for point-of-care applications.
• To assess the performance and utility of the device for various diagnostic tests.

Main Methods:

• Development of a compact, handheld dPCR device (SPEED) with integrated thermal cycling, imaging, and wireless communication.
• Utilized a custom-designed, recyclable silicon-based dPCR chip.
• Controlled device functions via Android-based applications.

Main Results:

• The SPEED dPCR device performs 45 cycles in approximately 49 minutes.
• Achieved precision and accuracy comparable to commercial dPCR machines.
• Successfully demonstrated utility in detecting SARS-CoV-2, cancer-associated genes, and confirming Down syndrome.

Conclusions:

• The SPEED dPCR device provides a portable, cost-effective solution for molecular diagnostics.
• Envisioned for widespread use in cancer screening, prenatal testing, and infectious disease monitoring.
• Potential to expedite pandemic response through rapid diagnostics.