blood verapamil metabolism measurement retinal uptake index of verapamil 2019-05-22T16:13:27Z CMO:0003178 PMID:24985475 RUI of verapamil This is a calculated measurement in which the amount of verapamil in retina 15 seconds after an injection of verapamil into the carotid artery is divided by the injected amount of verapamil and presented as a percentage. VT:0002792 clinical_measurement_ontology percentage of injected verapamil found in retina sjwang