ASCP-CHEMISTRY SECTION REAL EXAM QUESTIONS WITH 100% CORRECT ANSWERS 2025/2026

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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

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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

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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: