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Rox Factor IX
REF 900020
For determination of Factor IX activity in plasma and Factor IX preparations, including potency assignment of FIX concentrates.
Measurement Principle
FIX is activated by bovine FXIa with concomitant activation of human FX by generated FIXa in the presence of FVIII, calcium ions and phospholipids. The amount of formed FXa is related to the FIX activity and is measured through hydrolysis of a chromogenic FXa substrate. There is no use of FIX deficiency plasma. The Kit contains a fibrin polymerization inhibitor and a heparin antagonist.

- A chromogenic kit based upon FXa generation. - 1 Kit = 2 x 50 test - Detection Limit = 0.5% FIX - Quantification range, human plasma = 1 - 200% - No use of FIX deficiency plasma - Reconstituted reagents are stable for 72h at 2-8°C. |
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Features of the Rox Factor IX kit were presented on a poster at the ISTH 2011 meeting in Kyoto:

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News2011-08-22 Miniprint Rox Factor IX Poster - ISTH 2011 Check out the miniprint of the poster: "Features of a new chromogenic kit for determination of FIX activity in plasma and FIX concentrates":  2011-07-05 ISTH 2011 - Kyoto, July 23-28 Pia Bryngelhed, Rossix, will present a poster about the features of the Rox Factor IX kit. Poster No P-TH-208. Take the opportunity to meet us in Kyoto on July 28! 
2011-06-15 New Homepage Welcome to our new homepage! 2011-01-01 Rossix - Rossix AB In Jan 01, 2011, Rossix (sole proprietorship) was turned into a limited company, Rossix AB. As a consequense, the Corporate identity No, VAT No and IBAN No has been changed.  2010-10-29 Lecture - Factor VIII:C assays Steffen Rosén, Rossix gave a lecture on the topic Factor VIII:C assays at the Annual National Haemophilia Symposium in Hamburg, Germany 12-13th Nov 2010.
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