The anti-Xa assay is an automated ready-to-use, calibrated
chromogenic assay, which works by adding a citrated patient plasma sample to a mixture of buffer, chromogenic substrate, and excess factor Xa.
Background: The
chromogenic assay based on MTT bioreduction was adapted to Proteus mirabilis viability estimations.
The detection of
chromogenic assay was based on the absorbance (optical density O.D.) of monochromatic (405 nm) light.
For measurement of rivaroxaban concentrations, an anti-Factor Xa
chromogenic assay is regarded as a suitable.
An optimised, rapid
chromogenic assay, specific for measuring direct factor Xa inhibitors (rivaroxaban) in plasma.
Contribution of (1 [right arrow] 3)-beta-D-glucan
chromogenic assay to diagnosis and therapeutic monitoring of invasive aspergillosis in neutropenic adult patients: a comparison with serial screening for circulating galactomannan.
All patients who had been on heparin within 12 hours of labor were given a heparin test, consisting of an anti-Xa
chromogenic assay.