at 4 hr after the administration of 125i-urokinase , 32 % of the total radioactivity remained in the tca-insoluble fraction of plasma , and only 0.13 % of the administered radioactivity was excreted as a tca-insoluble fraction in the urine , suggesting that the administered urokinase may be metabolized for the most part into low molecular weight compounds .
C0042036
urine
C0042071
urokinase