Tested for Calculated Total CO2 in Blood
Normal range: 21.0 - 30.0 mEq/L
Day 306: 23.0 
Day 1540: 20.0 
Day 1540: 19.0 
Day 2366: 23.0 

Tested for Calculated Total CO2 in Blood
Trend is decreasing
Abnormality: 
Low values on days 1540
