clearance

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clear·ance

(klēr'ants),
1. Removal of a substance from the blood, for example, by renal excretion, expressed in terms of the volume flow of arterial blood or plasma that would contain the amount of substance removed per unit of time; measured in mL/min. Renal clearance of any substance except urea or free water is calculated as the urine flow in mL/min multiplied by the urinary concentration of the substance divided by the arterial plasma concentration of the substance; normal human values are commonly expressed per 1.73 m2 body surface area.
2. A condition in which bodies may pass each other without hindrance, or the distance between bodies.
3. Removal of something from some place; for example, esophageal acid clearance refers to removal from the esophagus of some acid that has refluxed into it from the stomach, evaluated by the time taken for restoration of a normal pH in the esophagus.

clearance

(klîr′əns)
n.
1. A space cleared; a clearing.
2.
a. The removal by the kidneys of a substance from blood plasma.
b. Renal clearance.
FDAspeak See Marketing clearance
Occupational medicine The amount of space above a worker’s head
Pharmacology A measure of the elimination of a drug, therapeutic agent, or other substance from the body or other biologic system; clearance is expressed as a hypothetical volume that is completely removed in a given unit of time
Pharmacokinetics The product of the volume of distribution and the elimination rate constant; much of a drug’s elimination is via the kidneys and clearance is commonly expressed in mL/min or L/hr
Physiology
(1) The removal of a substance from the blood by metabolism or excretion
(2) A quantitative measure of such a removal
Vox populi The amount of space between 2 closely related substances

clearance

Pharmacology The elimination of a drug, therapeutic agent, or other substance from the body or other biologic system; clearance is expressed as a hypothetical volume that is completely removed in a given unit of time; in terms of pharmacokinetics, clearance is the product of the volume of distribution and the elimination rate constant; much of a drug's elimination is via the kidneys and clearance is commonly expressed in mL/min or L/hr. See Hepatic clearance, Renal clearance, Therapeutic drug monitoring, Total body clearance Physiology
1. The removal of a substance from the blood by metabolism or excretion. See Nasal mucociliary clearance.
2. A quantitative measure of item 1.

clear·ance

(klēr'ăns)
1. Indicated as C with a subscript to show the substance removed: removal of a substance from the blood, e.g., by renal excretion, expressed in terms of the volume flow of arterial blood or plasma that would contain the amount of substance removed per unit time; measured in mL per minute; normal values in humans are commonly expressed per 1.73 m2 body surface area.
2. A condition in which bodies may pass each other without hindrance, or the distance between bodies.
3. Removal of something from some place; e.g., "esophageal acid clearance" refers to removal from the esophagus of acid that has refluxed into it from the stomach, evaluated by the time taken for restoration of a normal pH in the esophagus.

clearance

1. The removal of a substance from the blood, usually by the kidneys.
2. The rate of such removal.

clear·ance

(klēr'ăns)
Removal of something from an area.
References in periodicals archive ?
He now scours car boot and jumble sales, house clearances and other auctions to seek out those hard-to-find bits of Lego.
Tia Greyhound and Lurcher Rescue, based at Sowerby Bridge, wants bric-a-brac, furniture and items from house clearances to sell to raise cash to look after their dogs.
They buy in discontinued stock from places like antique shops, rag markets and house clearances and then they sell them to people who have broken plates or who need to make up an extra two place settings in their six-piece dinner service.
"Our customers have been great, bringing stuff in from loft and house clearances -it's all gratefully accepted.
In April, "despicable" vandals stripped two vans used by the charity to collect donations from house clearances.