The phrase "assay changes" is correct and usable in written English.
It can be used in contexts related to testing or analyzing changes in a particular substance or condition, often in scientific or technical discussions.
Example: "The laboratory will assay changes in the chemical composition of the samples over time."
Alternatives: "analyze modifications" or "test variations".
The RNAs from these cells and from 1-g control cells were extracted and analyzed on earth after flight to assay changes in gene expression.
Objective: Diagnosis of perioperative myocardial infarction (P-MI) after coronary artery bypass graft (CABG) surgery traditionally relied on a combination of electrocardiographic and enzyme assay changes.
A main reason for this is that biochemical methods used traditionally to assay changes in cytoplasmic cAMP concentration are limited in spatiotemporal resolution and typically require perturbing cellular structure and/or function for implementation.
Here we manipulate the Drosophila octopaminergic system and assay changes in adult male decision-making in courtship and aggression paradigms.
To explore how these distributions change over time, we imaged lipids in the nerve cord near the site of the lesion at different times after trauma (T0, T6 h, T24 h) in order to assay changes that correlate with different stages in the process of repair.
Adjustment for assay changes noticeably reduced the difference between surveys.
The mean coefficient of variation was higher before vs. after assay change.
To explore whether an assay change was responsible for an increasing proportion of patients with undetectable HIV viral loads at our urban HIV clinic, we selected highly stable patients, examining their viral loads before and after changing assays.
We included and compared all pVLs of patients who had ≥1 pVL assessed via RT-PCR (Roche AMPLICOR HIV-1 MONITOR Ultrasensitive version 1.5, Roche Molecular Systems, Inc) during eight months prior to assay change, and via bDNA (VERSANT HIV-1 RNA version 3.0 bDNA Assay, Siemens Diagnostics) during six months after the change.
No other alterations in our practice have happened contemporaneous with assay change.
If an assay change is unavoidable, a new baseline should be established through parallel Tg measurements using both the old and the new assay (29).
