- 20-29 mEq/L
- measures amt of CO2 in blood (indirectly measuring the blood bicarbonate level). CO2 levels can indicate fluid loss or retention. Also measure kidney and lung fxn.
- Low levels of CO2: addison's, diarrhea, ethylene glycol poisoning, ketoacidosis, kidney disease, lactic acidosis, metabolic acidosis, methanol poisoning, salcicylate toxicit (aspirin overdose)
- High levels: breathing disorder, cushing syndrome, vomiting, hyperaldosteronism
Also check in: Dementia, renal tubular acidosis, delerium, alkalosis