# biological half-life

> pharmacokinetic parameter; (of a substance) time it takes for a substance to lose half of its pharmacologic, physiologic, or radiologic activity

**Wikidata**: [Q686886](https://www.wikidata.org/wiki/Q686886)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Biological_half-life)  
**Source**: https://4ort.xyz/entity/biological-half-life


## References

1. Freebase Data Dumps. 2013