Assertion: serum bilirubin | /r/HasProperty | determined for 4.5 hr
Facets:
value: frequently
type: TEMPORAL
Source sentences:
text: After an initial fast of 15 to 39 hr, caloric and noncaloric materials were administered by mouth or vein to 13 subjects, and the total serum bilirubin (TSB) was determined frequently for 4.5 hr.