1
ASCP-CHEMISTRY SECTION REAL EXAM
QUESTIONS WITH 100% CORRECT ANSWERS
2025/2026
What is the proper pH for the buffered solution used to perform serum protein
electrophoresis?
A. 5.6
B. 7.6
C. 8.6
D. 9.6 - correct-answer -C. 8.6
The buffer pH most effective at allowing amphoteric proteins to migrate toward
the cathode in an electrophoretic system would be:
A. 4.5
B. 7.5
C. 8.6
D. 9.5 - correct-answer -A. 4.5
, 2
An electrode has a silver/silver chloride anode an a platinum wire cathode. It is
suspended in KCl solution and separated from the blood to be analyzed by a
selectively permeable membrane. Such an electrode is used to measure which of
the following?
A. pH
B. PCO2
C. PO2
D. HCO3 - correct-answer -C. PO2
Hydrogen ion concentration (pH) in blood is usually determined by means of
which of the following electrodes?
A. silver
B. glass
C. platinum
D. platinum-lactate - correct-answer -B. glass
An automated method or measuring chloride which generates silver ions in the
reaction is:
A. coulometry
, 3
B. mass spectrometry
C. chromatography
D. polarography - correct-answer -A. coulometry
Coulometry is often used to measure:
A. chloride in sweat
B. the pH in saliva
C. bicarbonate in urine
D. ammonia in plasma - correct-answer -A. chloride in sweat
In a pH meter reference electrodes may include:
A. silver-silver chloride
B. quinhydrone
C. hydroxide
D. hydrogen - correct-answer -A. silver-silver chloride
Most automated blood gas analyzers directly measure:
ASCP-CHEMISTRY SECTION REAL EXAM
QUESTIONS WITH 100% CORRECT ANSWERS
2025/2026
What is the proper pH for the buffered solution used to perform serum protein
electrophoresis?
A. 5.6
B. 7.6
C. 8.6
D. 9.6 - correct-answer -C. 8.6
The buffer pH most effective at allowing amphoteric proteins to migrate toward
the cathode in an electrophoretic system would be:
A. 4.5
B. 7.5
C. 8.6
D. 9.5 - correct-answer -A. 4.5
, 2
An electrode has a silver/silver chloride anode an a platinum wire cathode. It is
suspended in KCl solution and separated from the blood to be analyzed by a
selectively permeable membrane. Such an electrode is used to measure which of
the following?
A. pH
B. PCO2
C. PO2
D. HCO3 - correct-answer -C. PO2
Hydrogen ion concentration (pH) in blood is usually determined by means of
which of the following electrodes?
A. silver
B. glass
C. platinum
D. platinum-lactate - correct-answer -B. glass
An automated method or measuring chloride which generates silver ions in the
reaction is:
A. coulometry
, 3
B. mass spectrometry
C. chromatography
D. polarography - correct-answer -A. coulometry
Coulometry is often used to measure:
A. chloride in sweat
B. the pH in saliva
C. bicarbonate in urine
D. ammonia in plasma - correct-answer -A. chloride in sweat
In a pH meter reference electrodes may include:
A. silver-silver chloride
B. quinhydrone
C. hydroxide
D. hydrogen - correct-answer -A. silver-silver chloride
Most automated blood gas analyzers directly measure:
