blood steroid level blood hormone level blood steroid hormone level 2012-08-02T04:07:52Z CMO:0001004 JSmith Measurement of the amount in blood of an organic compound the basis of which is a characteristic arrangement of four fused cycloalkane rings, i.e. three cyclohexane rings and one cyclopentane ring, that is produced in one part or organ of the body and initiates or regulates the activity of an organ or a group of cells in another part of the body. clinical_measurement_ontology