Tested for Calculated Thyroxine (T4) Index in Blood
Normal range: 4.4 - 11.4 ug/dL
Day 588: 3.9 
Day 601: 1.8 

Tested for Calculated Thyroxine (T4) Index in Blood
Trend is decreasing
Abnormality: 
Low values on days 588, 601
