BOC CHEMISTRY REVIEW WITH COMPLETE
QUESTIONS AND VERIFIED ANSWERS [
GRADED A+]
True or false? Serum urea levels are less affected by diet and metabolism than are
serum creatinine levels. - ✔✔False
Which of the following best describes the correct collection and handling
conditions for a blood ammonia measurement?
A. Fasting patient, draw clot tube, separate serum immediately, test immediately
B. Draw sodium heparin tube, place in ice bath immediately, separate cells and
plasma in refrigerated centrifuge, immediately remove plasma and freeze if
analytical testing is delayed
©morren2024/2025.Year published 2024.
,C. Draw clot tube, separate serum from clot in refrigerated centrifuge, protect
from light, freeze if not tested immediately
D. Fasting patient, draw lithium heparin tube, place tube on an ice pack,
centrifuge at 20° C, test immediately - ✔✔B
Monitoring of _______ in patients on chemotherapy due to leukemia, lymphoma
or multiple myeloma is necessary to avoid nephrotoxicity.
A. Serum creatinine
B. Urine creatinine
C. BUN
D. Serum uric acid
E. Urea in urine - ✔✔D
Of the following drug therapies, which is MOST likely to interfere with the Jaffe
chemistry for measuring creatinine?
A. Aspirin
©morren2024/2025.Year published 2024.
,B. Cephalosporin
C. Acetaminophen
D. High water intake
E. Low water intake - ✔✔B
The most likely cause for serum/plasma to appear "milky" is the presence of:
A. VLDL
B. LDL
C. HDL
D. Chylomicrons - ✔✔D
Which of the following lipoproteins is the major carrier of cholesterol to
peripheral tissues?
A. Chylomicrons
B. VLDL
©morren2024/2025.Year published 2024.
, C. LDL
D. HDL - ✔✔C
A patient is admitted to the hospital with intense chest pains. The patient's
primary care physician requests that the emergency room doctor order several
tests, including a lipid profile with cholesterol fractionation. The patient's results
are as follows:
Total Cholesterol = 400 mg/dL Triglycerides = 300 mg/dL
HDL Cholesterol = 100 mg/dL LP Electrophoresis - pending
The LDL cholesterol for this patient would be ____________ mg/dL.
A. 160
B. 200
C. 240
D. 300 - ✔✔C
©morren2024/2025.Year published 2024.
QUESTIONS AND VERIFIED ANSWERS [
GRADED A+]
True or false? Serum urea levels are less affected by diet and metabolism than are
serum creatinine levels. - ✔✔False
Which of the following best describes the correct collection and handling
conditions for a blood ammonia measurement?
A. Fasting patient, draw clot tube, separate serum immediately, test immediately
B. Draw sodium heparin tube, place in ice bath immediately, separate cells and
plasma in refrigerated centrifuge, immediately remove plasma and freeze if
analytical testing is delayed
©morren2024/2025.Year published 2024.
,C. Draw clot tube, separate serum from clot in refrigerated centrifuge, protect
from light, freeze if not tested immediately
D. Fasting patient, draw lithium heparin tube, place tube on an ice pack,
centrifuge at 20° C, test immediately - ✔✔B
Monitoring of _______ in patients on chemotherapy due to leukemia, lymphoma
or multiple myeloma is necessary to avoid nephrotoxicity.
A. Serum creatinine
B. Urine creatinine
C. BUN
D. Serum uric acid
E. Urea in urine - ✔✔D
Of the following drug therapies, which is MOST likely to interfere with the Jaffe
chemistry for measuring creatinine?
A. Aspirin
©morren2024/2025.Year published 2024.
,B. Cephalosporin
C. Acetaminophen
D. High water intake
E. Low water intake - ✔✔B
The most likely cause for serum/plasma to appear "milky" is the presence of:
A. VLDL
B. LDL
C. HDL
D. Chylomicrons - ✔✔D
Which of the following lipoproteins is the major carrier of cholesterol to
peripheral tissues?
A. Chylomicrons
B. VLDL
©morren2024/2025.Year published 2024.
, C. LDL
D. HDL - ✔✔C
A patient is admitted to the hospital with intense chest pains. The patient's
primary care physician requests that the emergency room doctor order several
tests, including a lipid profile with cholesterol fractionation. The patient's results
are as follows:
Total Cholesterol = 400 mg/dL Triglycerides = 300 mg/dL
HDL Cholesterol = 100 mg/dL LP Electrophoresis - pending
The LDL cholesterol for this patient would be ____________ mg/dL.
A. 160
B. 200
C. 240
D. 300 - ✔✔C
©morren2024/2025.Year published 2024.
