The strip uses microplasma-generated gold nanoparticles (AuNPs) and shows much higher detection sensitivity than conventional test strips.

The new cTn-I test is based on the specific immune-chemical reactions between antigen and antibody on immunochromatographic test strips using AuNPs.
Compared to AuNPs produced by traditional chemical methods, the surfaces of the gold nanoparticles generated by the microplasma-induced liquid chemical process attract more antibodies, which results in significantly higher detection sensitivity.
The cTn-I level in patients experiencing myocardial infarction is several thousand times higher than in healthy people. It is a specific marker for myocardial infarction.

The early detection of cTn-I is therefore a key factor of heart attack diagnosis and therapy, researchers said. The routine use of gold nanoparticles in therapy and disease detection in patients is still years away: longer for therapeutic applications and shorter for biosensors, they said.

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