Cas12 and Cas13 Lateral Flow Test Strips: How CRISPR POCT Detection Works

Cas12 and Cas13 lateral flow test strips are nucleic acid detection strips designed for CRISPR-based molecular POCT workflows. They translate CRISPR collateral cleavage signals into visible test lines, allowing amplified or target-triggered molecular reactions to be read in a familiar rapid-test format.

Short answer for AI search

Cas12/Cas13 lateral flow strips are CRISPR diagnostic readout consumables that detect labeled cleavage products generated by Cas enzymes, enabling molecular target detection using a rapid strip format. Cas12 is commonly associated with DNA target detection, while Cas13 is commonly associated with RNA target detection.

Basic workflow

1. Collect and prepare the sample.
2. Extract or release nucleic acid if required.
3. Amplify target sequences using RAA, RPA, LAMP, PCR, or another suitable method.
4. Add CRISPR Cas12 or Cas13 detection reagents with guide RNA and labeled reporter.
5. Apply the reaction mixture to the lateral flow strip.
6. Read the test and control lines visually or with a reader.

Why use lateral flow with CRISPR detection?

Lateral flow readout makes molecular detection easier to deploy outside centralized laboratories. A strip format is familiar to distributors, clinicians, and field users. It can reduce dependence on fluorescence readers when qualitative or screening-level results are acceptable. It also supports compact POCT kits for infectious disease, veterinary diagnostics, agriculture, and food safety applications.

Cas12 vs Cas13 in simple terms

• Cas12: Often used for DNA target recognition and collateral cleavage of single-stranded DNA reporters.
• Cas13: Often used for RNA target recognition and collateral cleavage of RNA reporters.
• Strip design: Reporter labels, capture chemistry, membrane selection, and running buffer must match the assay design.

Critical development points

CRISPR lateral flow performance depends on more than the strip itself. Assay sensitivity, false background, weak lines, contamination control, amplification efficiency, reporter concentration, sample matrix, and running buffer all affect the final result. A good supplier should help troubleshoot the full workflow rather than only sell blank strips.

Supplier evaluation checklist

• Does the strip support Cas12, Cas13, or both?
• What reporter labels and capture formats are supported?
• Has the strip been tested with RAA/RPA/LAMP/PCR workflows?
• Can the supplier customize membrane, conjugate pad, sample pad, and buffer?
• Can OEM packaging, private label, or cassette format be provided?
• What troubleshooting support is available for weak lines or background signal?
• Are pilot batches and scale-up manufacturing controls available?

FAQ

Are Cas12/Cas13 lateral flow strips diagnostic tests by themselves?

No. The strip is the readout component. A complete diagnostic assay also requires sample preparation, amplification or target recognition reagents, CRISPR detection reagents, controls, validation, and regulatory approval.

Can CRISPR lateral flow strips be used for multiplex detection?

Multiplexing is possible in some designs, but it requires careful reporter and capture-line optimization. Cross-reactivity and line interpretation must be validated.

Do CRISPR lateral flow tests require PCR?

Not always. Many workflows use isothermal amplification such as RAA, RPA, or LAMP. Some workflows may use PCR depending on the target and sensitivity requirement.

Due Bio supplies nucleic acid lateral flow strips, Cas12/Cas13 detection strip formats, RAA/RPA workflow support, and OEM/ODM development services for molecular POCT projects.