ASCP CHEMISTRY PROFESSIONAL TEST
BANK 2026 COMPLETE SOLUTION SERIES
◉A 24-hour urine specimen (total volume=1,136 mL) is submitted
to the laboratory for quantitative urine protein. Calculate the
amount of protein excreted per day, if the total protein is 52 mg/dL.
A. 591 mg
B. 487 mg
C. 220 mg
D. 282 mg. Answer: A 591 mg
◉The following results were obtained:
urine creatinine: 90 mg/dL
serum creatinine: 0.90 mg/dL
patient's total body surface: 1.73 m2
total urine volume in 24 hours: 1500 mL
Given the above data, the patient's creatinine clearance, in mL/min,
is:
A. 104
,B. 124
C. 144
D. 150. Answer: A. 104 mL/min
◉Which of the following is the formula for calculating absorbance
given the percent transmittance (%T) of a solution?
A. 1-log(%T)
B. (log(%T))/2
C. 2 x log(%T)
D. 2-log(%T). Answer: D. 2-log(%T)
◉Which of the following is the Henderson-Hasselbach equation?
A. pKa =pH + log ([acid]/[salt])
B. pKa = pH + log ([salt]/[acid])
C. pH = pKa + log ([acid]/[salt])
D. pH = pKa + log ([salt]/[acid]). Answer: D. pH = pKa + log
([salt]/[acid])
◉The creatinine clearance (mL/min) is equal to:
, A. urinary creatinine (mg/L)/[volume of urine (mL/min) x plasma
creatinine (mg/mL)]
B. [urinary creatinine (mg/mL) x volume (mL/min) x plasma
creatinine (mg/mL)]
C. (urinary creatinine (mg/L))/[volume (mL/hour) x plasma
creatinine (mg/L)]
D. [urinary creatinine (mg/L) x volume (mL/hour)] / plasma
creatinine (mg/mL). Answer: B. [urinary creatinine (mg/L) x volume
(mL/min)] / plasma creatinine (mg/L)
◉Normally the bicarbonate concentration is about 24 mEq/L and
the carbonic acid concentration is abut 1.2; pK=6.1, log 20=1.3.
Using the equation pH=pK + log ([salt]/[acid]), calculate the pH.
A. 7.28
B. 7.38
C. 7.40
D. 7.42. Answer: C. 7.40
◉Which of the following methods is susceptible to the solvent
displacing effect that results in falsely decreased electrolyte values?
A. indirect ion-selective electrodes
B. direct ion-selective electrodes
BANK 2026 COMPLETE SOLUTION SERIES
◉A 24-hour urine specimen (total volume=1,136 mL) is submitted
to the laboratory for quantitative urine protein. Calculate the
amount of protein excreted per day, if the total protein is 52 mg/dL.
A. 591 mg
B. 487 mg
C. 220 mg
D. 282 mg. Answer: A 591 mg
◉The following results were obtained:
urine creatinine: 90 mg/dL
serum creatinine: 0.90 mg/dL
patient's total body surface: 1.73 m2
total urine volume in 24 hours: 1500 mL
Given the above data, the patient's creatinine clearance, in mL/min,
is:
A. 104
,B. 124
C. 144
D. 150. Answer: A. 104 mL/min
◉Which of the following is the formula for calculating absorbance
given the percent transmittance (%T) of a solution?
A. 1-log(%T)
B. (log(%T))/2
C. 2 x log(%T)
D. 2-log(%T). Answer: D. 2-log(%T)
◉Which of the following is the Henderson-Hasselbach equation?
A. pKa =pH + log ([acid]/[salt])
B. pKa = pH + log ([salt]/[acid])
C. pH = pKa + log ([acid]/[salt])
D. pH = pKa + log ([salt]/[acid]). Answer: D. pH = pKa + log
([salt]/[acid])
◉The creatinine clearance (mL/min) is equal to:
, A. urinary creatinine (mg/L)/[volume of urine (mL/min) x plasma
creatinine (mg/mL)]
B. [urinary creatinine (mg/mL) x volume (mL/min) x plasma
creatinine (mg/mL)]
C. (urinary creatinine (mg/L))/[volume (mL/hour) x plasma
creatinine (mg/L)]
D. [urinary creatinine (mg/L) x volume (mL/hour)] / plasma
creatinine (mg/mL). Answer: B. [urinary creatinine (mg/L) x volume
(mL/min)] / plasma creatinine (mg/L)
◉Normally the bicarbonate concentration is about 24 mEq/L and
the carbonic acid concentration is abut 1.2; pK=6.1, log 20=1.3.
Using the equation pH=pK + log ([salt]/[acid]), calculate the pH.
A. 7.28
B. 7.38
C. 7.40
D. 7.42. Answer: C. 7.40
◉Which of the following methods is susceptible to the solvent
displacing effect that results in falsely decreased electrolyte values?
A. indirect ion-selective electrodes
B. direct ion-selective electrodes
