assay

(redirected from anti-Xa assay)
Also found in: Dictionary, Thesaurus, Medical, Legal, Financial.

assay

1. 
a. an analysis, esp a determination of the amount of metal in an ore or the amounts of impurities in a precious metal
b. (as modifier): an assay office
2. a substance undergoing an analysis
3. a written report on the results of an analysis

assay

[′a‚sā]
(analytical chemistry)
Qualitative or quantitative determination of the components of a material, as an ore or a drug.
References in periodicals archive ?
Rivaroxaban: anti-Xa assay utilising a specific rivaroxaban calibrator
LMWH levels cannot be monitored by the aPTT, but require a specialised anti-Xa assay, which is currently available at Johannesburg Hospital Haematology Laboratory (tel (011) 488-3068).
In addition to tests for general screening, HemosIL D-Dimer assays for the exclusion of Venous Thromboembolism and HemosIL Liquid Anti-Xa assay for monitoring Heparin treatment, IL also offers a complete line of Specialty testing assays for the diagnosis and management of bleeding and thrombotic disorders.
INR responses vary widely depending on the thromboplastin assay reagent, but a calibrated anti-Xa assay appears to be a suitable method for determination of Riva concentration (13-16).