Automated Commercial System (United States Customs)
ACSM
American College of Sports Medicine
ACT
AIDS Clinical Trials
ACT
Applied Clinical Trials
ACTB (NCTR)
Analytical Chemical Techniques Branch (NCTR)
ACTH
Adrenocorticotropic Hormone
Actin
One of the two contractile proteins in muscle (the other being myosin). Actin is also found in the microfilaments that form part of the cytoskeleton of all cells.
Action Letter
An official FDA communication that informs an NDA or BLA sponsor of a decision by the agency. An approval letter allows commercial marketing of the product.
Action Level
A requirement set by the user, which, when exceeded, requires immediate intervention, including the investigation of cause, and corrective action.
Action Level
Levels or ranges (actual attribute values) that, when exceeded, indicate that a process has drifted from its normal operating range. Exceeding an Action Level indicates that corrective action should be taken to bring the process back into its normal operating range.
Action Level
In general, the level of a pollutant (contaminant) at which specified actions or counter measures are to be taken. Also, a level of exposure at which the employer must initiate some actions such as medical monitoring and training. The action level is generally set at 50% of the Permissible Exposure Limit (PEL).
Action Level
Levels or ranges (actual attribute values) that, when exceeded, indicate that a process has drifted from its normal operating range. Exceeding an Action Level indicates that corrective action should be taken to bring the process back into its normal operating range.
Action Level (general)
Level set by the user in the context of controlled environments, which, when exceeded, requires immediate intervention, including the investigation of cause, and corrective action.
Action Level (microbiological)
Microbiological level set by the user in the context of controlled environments which, when exceeded, requires immediate intervention, including investigation of cause, and corrective action.
Action Limit
(ICH Q6B) An internal (in-house) value used to assess the consistency of the process at less critical steps.