The phrase "assay endpoint" is correct and usable in written English.
It is typically used in scientific and medical contexts to refer to a specific point in an assay where measurements or observations are made to determine the outcome of an experiment or study.
Example: "The assay endpoint was reached after 24 hours of incubation, allowing us to analyze the results."
Alternatives: "test endpoint" or "analysis endpoint".
This paper discusses a number of methodological issues related to bioassay design and analysis that would ultimately lead to highly accurate assay endpoint determinations with minimum variance that would be comparable across laboratories.
Assay endpoint detection methods were classified as Fluorescence emission, Luminescence, RNA quantification and Absorbance.
A strongly positive GBV-C RNA plasma bag from an HIV negative blood donor was obtained and serial dilutions of it were used to estimate the assay endpoint sensitivity.
The assay endpoint for irritancy measurements was IL-1α (Interleukin-1 alpha).
At assay endpoint, slides were fixed with 100% methanol and stained with 10% Giemsa in water.
However, the levels of other genes continued to increase until the assay endpoint (48 h) (Fig. 6).
Results of the laboratory study showed that the comet assay endpoints of tail length and tail extent moment responded in a dose- and time-dependent manner.
A laboratory study exposing L. macrochirus to the known mutagen, methyl methanesulfonate, was performed to validate the comet assay endpoints in this species.
It is also crucial to recognize that the selection and use of techniques used to quantify assay endpoints (e.g., antibody concentration) will affect their accuracy and precision and these methods must also be defined and uniformly applied within and across laboratories.
A total of 624 in vitro assay endpoints ranging from gene to entire organism have been measured for each chemical in ToxCast Phase I.
The scaled activity values shown on the graph are calculated by dividing the response values by the activity cutoff, thereby enabling activity comparisons across assay endpoints.
