boron concentration in urine
Drug concentration in urine
urine chromium concentration
Urine drug concentration
Urine iodine concentration
the ratio of urine amylase to urine creatinine
High-concentration and low-concentration wastewater
minimum inhibitory concentration and minimum bactericidal concentration
the minimum inhibitory concentration and minimum bactericidal concentration
1-hydroxypyrene in urine
24-hour urine specimen collection