Tested for Calculated Total CO2 in Blood
Normal range: 21.0 - 30.0 mEq/L
Day 133: 18.0 
Day 133: 17.0 
Day 134: 17.0 
Day 661: 18.0 

Tested for Calculated Total CO2 in Blood
Trend is fluctuating
Abnormality: 
Low values on days 133, 134, 661
