A POINT-OF-CARE IMMUNOTEST FOR BEDSIDE DETERMINATION OF HEART-TYPE FATTY ACID-BINDING PROTEIN

Chao-Yang Tong, Cangel Pui-Yee Chan, Kwan-yee Cheung, George W. H. Cautherley, Jan F. C. Glatz, Reinhard Renneberg*

*Corresponding author for this work

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Abstract

Heart-type fatty acid-binding protein (H-FABP) is a small cytosolic protein abundant in heart muscle cells. It offers great potential as a sensitive biomarker for early diagnosis of acute myocardial infarction (AMI). Ninety-one patients presented to the Emergency Department suspected of AMI with a median symptom onset of 6 h (IQR 3-20 h), of which 75 (82.4%) had AMI. The diagnostic performance of a point-of-care immunotest for H-FABP was compared with those of cardiac troponin T (cTnT), creatinine kinase MB (CK-MB), and myoglobin. The H-FABP immunotest was found to have a significant better sensitivity than the other markers and a better specificity than myoglobin and CK-MB. The H-FABP Immunotest gave the greatest area under the receiver operating characteristic (ROC) curve (0.864) for those admitted within 6 h after the onset of symptoms; whereas, cTnT gave the greatest area under the ROC curve (0.936) for those admitted 6-24 h. The H-FABP was also found to be the most efficient marker to diagnose patients suspected of AMI without ST-elevation and with a negative cTnT. Early detection of H-FABP using the point-of-care immunotest in patients suspected of AMI may allow more accurate targeting of appropriate therapy and considerable cost savings than the current diagnostic tests.
Original languageEnglish
Pages (from-to)735-744
JournalAnalytical Letters
Volume43
Issue number4
DOIs
Publication statusPublished - 2010

Keywords

  • Acute myocardial infarction
  • Bedside
  • Cardiac troponin T
  • Creatine kinase MB
  • Heart-type fatty acid-binding protein
  • Myoglobin
  • Point-of-care

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