Ausscheidbar

Ausscheidbar is a German adjective meaning capable of being excreted or eliminated from an organism. The term derives from aus- "out" plus scheiden "to separate" with the suffix -bar, functioning similarly to English excretable or eliminable.

In medicine and pharmacology, ausscheidbare substances are those that can be removed from the body via excretion. The primary routes are renal (urine) and biliary (stool), but excretion can also occur via respiration (volatile metabolites), sweat, or breast milk. The term is commonly used to describe drugs, metabolites, or toxins that are not permanently retained and are eventually cleared.

Examples: many water-soluble drug metabolites are ausscheidbar and eliminated via the kidneys; some lipophilic compounds must be metabolized to more polar forms to become ausscheidbar. The concept is important for pharmacokinetic parameters such as clearance and half-life, which reflect the rate of excretion.

Related terms include Ausscheidung (excretion) and ausscheidbar compounds are contrasted with tissue-bound or non-excretable substances. In English-language literature, excretable or eliminable are common equivalents.