Automated latex agglutination and ELISA testing yield equivalent D-dimer results in patients with recent myocardial infarction. THROMBO Research Investigators

Thromb Haemost. 1999 Nov;82(5):1412-6.

Abstract

Our previous prospective study of post-infarction patients described a strong and significant association of increased plasma D-dimer concentrations in those who experienced a subsequent coronary death or non-fatal myocardial infarction. In the present study, we compare results on stored plasma obtained two months after the index myocardial infarction from 1,038 patients of this trial, using a simple automated latex agglutination (LA) assay in parallel with the standard ELISA test. Results show a somewhat higher mean value for the LA assay (702+/-1092 vs. 638+/-986 ng/ml, p = 0.0002), a strong linear correlation of the two assays (r = 0.86) and 88% agreement for values below 500 ng/ml by the ELISA test. D-dimer concentrations determined by each assay were highly correlated in patients with subsequent coronary artery events (p = 0.93) and quartile values for both the LA and ELISA were equally predictive of such events (p = 0.003 and p = 0.001, respectively). This is the first demonstration that a latex agglutination assay for D-dimer can be used to assess the prognostic risk of recurrent coronary thrombotic disease after myocardial infarction

Publication types

  • Comparative Study
  • Research Support, Non-U.S. Gov't
  • Research Support, U.S. Gov't, P.H.S.

MeSH terms

  • Adult
  • Automation
  • Enzyme-Linked Immunosorbent Assay / methods*
  • Evaluation Studies as Topic
  • Fibrin Fibrinogen Degradation Products / analysis*
  • Humans
  • Latex Fixation Tests / methods*
  • Myocardial Infarction / blood*
  • Prognosis
  • Recurrence
  • Retrospective Studies

Substances

  • Fibrin Fibrinogen Degradation Products
  • fibrin fragment D