biological half-life(redirected from T1/2)
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Related to T1/2: half life
biological half-life[¦bī·ə¦läj·ə·kəl ′haf ‚līf]
The time required by the body to eliminate half of the amount of an administered substance through normal channels of elimination.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.