The phrase "assayed in this preparation" is correct and usable in written English.
It can be used in scientific or technical contexts, particularly when discussing the analysis or testing of a substance or material.
Example: "The concentration of the active ingredient was assayed in this preparation to ensure its efficacy."
Alternatives: "tested in this formulation" or "analyzed in this mixture."
The enzyme was assayed in cytosol preparations of peripheral blood mononuclear cells (MNCs) from 111 patients who were receiving IFN-alpha 2b and 54 patients who were not, using an assay which measures the conversion of [alpha-32P]ATP to triphospho adenylyl 2',5' adenosine.
βAR binding was assayed in the same membrane preparation, using 67pMM [I]iodopindolol as the radioligand and 100 μM isoproterenol to displace specific binding.
The authors present an electrophysiological analysis of the postnatal developmental trajectory of murine SNc neurons assayed in in vitro slice preparations.
All samples were assayed in triplicate from two independent RNA preparations.
All experimental samples from a single animal preparation were assayed in the same RIA or ELISA.
Increasing quantities of the commercial enzyme preparations were assayed in the hydrolysis of triolein under the conditions detailed in the previous section.
All results are summarized from three protein preparations, each assayed in triplicate.
As a possible application, the behavior of the immobilized lipase preparations was assayed in triolein transesterification for fatty acid methyl esters (FAMEs) production.
LPS in the house dust extract and cockroach allergen preparations was assayed in pyrogen free water using the endpoint Limulus amoebocyte lysate (LAL) assay (Lonza, Basel Switzerland, 50-647 U). 96-well microplates and substrate solutions were warmed to 37°C.
Since the IHA is prepared from viable bacterial cultures, the preparation of the assays in countries where B. pseudomallei is categorized as a select agent is neither desirable nor practical.
