Udskillelse 80- 90% udskilles via urinen (inaktive 5 - og 10- formyltetrahydrofolatmetabolitter), mens 5- 8% udskilles via fæces.
Excretion 80-90% with the urine (5- and 10-formyl-tetrahydrofolates inactive metabolites), 5-8% with the faeces.