Lateral Flow Assay for PROM Detection Using Multi-Marker Antibodies
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Solution Overview
Problem
Current methods for diagnosing premature rupture of membranes (PROM) are plagued by high false-negative rates, leading to potential complications and unnecessary interventions, as they lack accuracy and reliability in detecting fetal membrane rupture.
Innovation Solution
A lateral flow assay test using a mixture of monoclonal and polyclonal antibodies specific to amniotic fluid proteins, such as PP12 and alpha-fetoprotein, is employed, which reduces false negatives to virtually zero by detecting specific proteins present in amniotic fluid, and is integrated into a user-friendly test strip with a timer for accurate and timely diagnosis.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional single-marker tests are used to detect PROM, then the test is simple and quick, but the false-negative rate exceeds 10% due to insufficient sensitivity
Solution Approach 1:
The patent combines multiple antibody reagents specific to different amniotic fluid proteins (such as alpha-fetoprotein, placental protein 12, and other markers) onto a single lateral flow assay strip. This multi-marker approach allows simultaneous detection of multiple biomarkers, significantly reducing false-negative rates while maintaining a simple point-of-care format that does not require complex equipment or procedures.
Solution Approach 2:
The test strip employs composite reagent systems containing mixtures of monoclonal and polyclonal antibodies against different amniotic fluid proteins. This composite antibody approach enhances detection sensitivity and reliability by targeting multiple biomarkers concurrently, thereby improving diagnostic accuracy without substantially increasing device complexity.
2Measurement precision
If a mixture of multiple antibodies specific to different amniotic fluid proteins is used, then false negatives are reduced to virtually zero, but the test structure becomes more complex
Solution Approach 1:
Multiple antibody reagents targeting different amniotic fluid proteins are merged into a single lateral flow assay strip, allowing concurrent detection of multiple biomarkers. This integration achieves high measurement precision and eliminates false negatives while maintaining a unified, user-friendly test format that does not require complex handling procedures.
Solution Approach 2:
The lateral flow assay strip is designed as a multi-functional device that simultaneously performs detection of multiple amniotic fluid protein markers (alpha-fetoprotein, placental protein 12, and others) using a single test application. This universal approach enhances detection sensitivity across different pregnancy stages and rupture conditions without requiring multiple separate tests.
3Reliability
If early and accurate diagnosis of PROM is achieved through multiple biomarker detection, then obstetric interventions can be optimized, but the test procedure becomes more cumbersome
Solution Approach 1:
The patent merges multiple biomarker detection capabilities into a single lateral flow assay strip that can be applied once to detect various amniotic fluid proteins simultaneously. This approach achieves high diagnostic reliability for optimizing obstetric interventions while maintaining procedural simplicity comparable to conventional single-marker tests, as no additional steps or equipment are required.
Solution Approach 2:
The lateral flow assay strip is designed as a self-contained, point-of-care device that automatically processes the sample and generates results without requiring complex laboratory equipment or specialized procedures. The test procedure remains simple and user-friendly while delivering enhanced diagnostic reliability through multi-marker detection, enabling clinicians to make informed decisions about gestational age-specific obstetric interventions.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution significantly enhances the accuracy of PROM diagnosis, reducing false negatives and enabling timely obstetric interventions, thereby minimizing complications and improving perinatal outcomes.
Implementation Method 1
The fluid sample then migrates by capillary action to the site of the monoclonal and polyclonal antibodies
Implementation Method 2
the antibodies specifically bind to the specific antigen present in the sample
Data Source
AI summary
A method is taught for the accurate determination of the premature rupture of membranes (PROM), defined as spontaneous rupture of membranes before the onset of uterine contractions. More specifically, a lateral flow assay strip tests for at least two antigens to greatly limit or eliminate the possibility of false negatives. A built-in timer in the cassette holding the lateral flow assay further increases the accuracy of the test. A collection buffer vial with self-contained shipping and dropper caps and built-in stand is also taught.