生物檢定是利用藥物對生物所起的作用來测定藥物强度的一種方法。今天我們所常用的藥物大半都是已知化學組成的纯物質,所以都能用化學分析方法來進行测定。某些藥物如鸦片、颠茄、番木(?)等雖然是很複雜的天然产物,但是牠們的有效成份——生物鹼都能分離出来,并能用化學方法行定量分析。有時候 Biometrics is a method of determining the strength of a drug using the effect of drugs on organisms. Most of the drugs we use today are pure substances of known chemical composition, so they can all be determined by chemical analysis. Although some drugs such as opium, belladonna, and papaya are complex natural products, their active ingredients, alkaloids, can be separated and chemically analyzed. sometimes