within the first eight hours , after four 400 mg doses of mepivacaine were given , all serum levels remained below the level of 5 to 6 micrograms/ml , which is said to be the lower level for mild cerebral toxic reactions in venous blood ( blood/plasma distribution 0.92 +/- 0.04 ) .
C0229671
serum
C0032105
blood/plasma