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P1 Rapid all-optical blood serum assay for heart disease biomarkers
  1. LE MacKenzie1,
  2. EK Barimah1,
  3. G Jose1,
  4. S Saha2
  1. 1Centre for Applied Photon Science, University of Leeds, UK
  2. 2Leeds Institute of Cardiovascular and Metabolic Medicine (LICAMM), Faculty of Medicine and Health, University of Leeds, UK


Blood-serum assays for heart-disease biomarkers such as myoglobin (Mb) and heart-type fatty acid binding protein (HFABP) are highly useful for objective cardiac infarct diagnosis and assessment of infarct size. However, current blood-serum immunoassays are extremely time consuming, requiring several hours of highly skilled labour in a biochemical laboratory.

We present a novel optical assay method for quantification of heart disease biomarkers in biological solutions (eg blood serum/urine). This method utilises the optical fluorescence properties of Europium III (Eu3+) rare-earth ions: when biomarkers are present in a solution, the fluorescence emission of Eu3+ ions is changed. This change in fluorescence can be easily measured in an automated manner, enabling the rapid quantification of biomarkers in solution.

In future, this method may be multiplexed to a “lab on a chip” device to measure multiple biomarkers simultaneously from a single biological sample in ~1 minute or less. This could potentially decrease the diagnosis time for heart disease and improve patient outcomes.

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