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Related Experiment Videos

Modified recalcification time: a global coagulation screening test

C R Spillert1, E J Lazaro

  • 1Department of Surgery, University of Medicine and Dentistry of New Jersey-New Jersey Medical School, Newark 07103-2757.

Journal of the National Medical Association
|August 1, 1993
PubMed
Summary
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A new Modified Recalcification Time (MRT) test can screen for hypercoagulability, a precursor to thrombosis. This global coagulation test shows promise for early detection and intervention in high-risk conditions.

Area of Science:

  • Hematology
  • Clinical Pathology
  • Biochemistry

Background:

  • Hypercoagulability is a suspected cause of death, but a global screening test is lacking.
  • Existing tests do not fully account for all coagulation factors, including tissue factor.

Purpose of the Study:

  • To introduce a Modified Recalcification Time (MRT) test as a global screening tool for hypercoagulability.
  • To establish normal and abnormal ranges for the MRT test.

Main Methods:

  • The Modified Recalcification Time (MRT) test was developed, incorporating cellular and chemical mediators.
  • Blood samples were incubated with saline and endotoxin, with MRT determined instrumentally.
  • Normal ranges were defined as 5.3–8.5 minutes (saline) and 4.5–7.5 minutes (endotoxin).

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Main Results:

  • Shorter MRT values indicate a higher degree of hypercoagulability.
  • MRT values were assessed in conditions with known thrombotic risk, showing statistically significant hypercoagulability.
  • Abnormal MRT ranges were observed in early breast cancer, diabetes, various cancers, peripheral vascular disease, and pregnancy.

Conclusions:

  • The Modified Recalcification Time (MRT) test meets criteria for a global coagulation screening test.
  • The test demonstrates specificity, sensitivity, and potential for early intervention to reduce morbidity and mortality.
  • MRT may aid in identifying asymptomatic hypercoagulability linked to cancer and cardiovascular disease.