Test articles for performing dry reagent prothrombin time assays

  • US 5,418,141 A
  • Filed: 05/06/1994
  • Issued: 05/23/1995
  • Est. Priority Date: 05/06/1994
  • Status: Expired due to Term
First Claim
Patent Images

1. A test article for performing dry reagent prothrombin time assays, said test article comprisinga solid phase matrix;

  • dry thromboplastin immobilized on or within the solid phase matrix, wherein the thromboplastin is substantially free from substances found in thromboplastin purified from brain extract which cause aberrant functioning intermediate transition states as the thromboplastin is rehydrated with liquid sample; and

    coagulation neutral agents which facilitate rehydration of the thromboplastin upon contact of the solid phase matrix with the liquid sample.

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