blood thyroxine level
blood triiodothyronine level
calculated blood thyroid hormone level
blood triiodothyronine to thyroxine ratio
2013-01-11T11:28:42Z
A calculated measurement in which the amount of triiodothyronine in a specified volume of blood is divided by the amount of thyroxine in the same sample and presented as a ratio, fraction, quotient or percentage, thus normalizing it to thyroxine level.
CMO:0001361
EFO:0009779
JSmith
blood T3 to T4 ratio
clinical_measurement_ontology
tri-iodothyronine/thyroxine ratio measurement