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[5] [6] An increase of alcohol intake by ~20 g ethanol/day will raise the PEth 16:0/18:1 concentration by ~0.10 μmol/L, and vice versa if the alcohol consumption has decreased. However, it has been demonstrated that there can be significant inter-personal variation, leading to potential misclassification between moderate and heavy drinkers. [ 7 ]
In toxicology, the median lethal dose, LD 50 (abbreviation for "lethal dose, 50%"), LC 50 (lethal concentration, 50%) or LCt 50 is a toxic unit that measures the lethal dose of a given substance. [1] The value of LD 50 for a substance is the dose required to kill half the members of a tested population after a specified test duration.
The Severity of Alcohol Dependence Questionnaire (SADQ or SAD-Q) is a 20 item clinical screening tool designed to measure the presence and level of alcohol dependence. [1] It is divided into five sections: Physical withdrawal symptoms; Affective withdrawal symptoms; Craving and relief drinking; Typical daily consumption
The EC 50 of a quantal dose response curve represents the concentration of a compound where 50% of the population exhibit a response, [5] after a specified exposure duration. For clarification, a graded dose response curve shows the graded effect of the drug (y axis) over the dose of the drug (x axis) in one or an average of subjects.
The Paddington alcohol test (PAT) was first published in the Journal of Accident & Emergency Medicine in 1996. It was designed to identify alcohol-related problems amongst those attending accident and emergency departments .
The fixed-dose procedure (FDP), proposed in 1992 by the British Toxicology Society, is a method to assess a substance's acute oral toxicity. [ 1 ] [ 2 ] In comparison to the older LD 50 test developed in 1927, this procedure produces similar results while using fewer animals and causing less pain and suffering. [ 3 ]
The IC 50 terminology is also used for some behavioral measures in vivo, such as the two bottle fluid consumption test. When animals decrease consumption from the drug-laced water bottle, the concentration of the drug that results in a 50% decrease in consumption is considered the IC 50 for fluid consumption of that drug.
The Alcohol Timeline Followback Method (TLFB) is a tool developed in 1970 by Linda Carter Sobell and Mark B. Sobell used to assess an individual's alcohol intake. It evaluates an individual's daily drinking and then provides a report of an individual's drinking pattern.