Families and caregivers
Understand persistent jaundice, pale stools, dark urine, evaluation, and why prompt medical attention matters.
Visit the family guide
Education · Research · Collaboration
Dx4Liver advances education, research awareness, and institutional collaboration focused on MMP-7 measurement and biliary atresia.
Start with what matters
Biliary atresia moves quickly. Good information should, too. Choose the path that fits your needs.
Understand persistent jaundice, pale stools, dark urine, evaluation, and why prompt medical attention matters.
Visit the family guideReview the evolving evidence for serum MMP-7 as one component of a complete biliary atresia evaluation.
View clinical educationLearn about TR-FRET measurement principles, institutional responsibilities, and how to contact Dx4Liver.
View laboratory informationUnderstanding biliary atresia
Biliary atresia is a rare disease of infancy in which bile ducts become injured and obstructed. Persistent jaundice, pale or clay-colored stools, and dark urine need prompt medical evaluation.
MMP-7 is one of several tools being studied and used to support evaluation. No single biomarker replaces the complete clinical workup or establishes the final diagnosis by itself.


Measurement technology
Time-resolved fluorescence resonance energy transfer is a homogeneous, plate-based technology used for quantitative biomarker measurement.
Its proximity-based donor and acceptor system supports sensitive fluorescence detection with reduced background and a no-wash workflow. Assay performance and appropriate use must be established by each laboratory.
See how TR-FRET worksEvidence library
Explore selected peer-reviewed publications covering MMP-7, biliary atresia, emerging diagnostic approaches, and clinical guidance.
A rapid point-of-care MMP-7 assay was evaluated across five tertiary centers.
A systematic review synthesized evidence on the diagnostic accuracy of MMP-7.
A large cohort evaluated serum MMP-7 using two assay platforms.
Institutional inquiries
Qualified hospitals and laboratories may contact Dx4Liver for general institutional information about MMP-7 measurement and TR-FRET technology.