Blood total arsenic concentration
concentration gradient of total sugar
concentration of critical total cation
concentration of total mercury
CSF total protein concentration
leaf total nitrogen concentration
Total arsenic concentration in air
Total dust concentration
total Nitrogen TN concentration
total PAHs concentration
total phosphorus concentration
total protein concentration in blood
total salt concentration
total suspended particles concentration
total total knee replacement
soil total nitrogen and total phosphorus
TN Total Nitrogen and TP Total Phosphorus