BOC Chemistry Questions with Correct
Answers
The LDL cholesterol for this patient would be ____________ mg/dL.
A. 160
B. 200
C. 240
D. 300 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
This patient's LDL cholesterol is:
A. Optimal
,B. Desirable
C. Borderline
D. High D
Which of the following results would be the most consistent with high risk for coronary heart
disease?
A. 20 mg/dL HDL cholesterol and 250 mg/dL total cholesterol
B. 35 mg/dL HDL cholesterol and 200 mg/dL total cholesterol
C. 50 mg/dL HDL cholesterol and 190 mg/dL total cholesterol
D. 55 mg/dL HDL cholesterol and 180 mg/dL total cholesterol
E. 60 mg/dL HDL cholesterol and 170 mg/dL total cholesterol A
Serum bilirubin is unstable because of:
A. Light sensitivity
B. Precipitation due to acid pH
C. Digestion by proteolytic enzymes
D. Precipitates on standing A
,A 21-year-old man with nausea, vomiting, and jaundice has the following laboratory findings:
Total serum bilirubin 8.5 mg/dL (normal 0-1.0 mg/dL)
Direct serum bilirubin 6.1 mg/dL (normal 0-0.5 mg/dL)
Urine urobilinogen Increased
Urine bilirubin Positive
AST 200 U/L (normal 0-50 μ/L)
ALP 160 U/L (normal 0-150 μ/L)
What disease state are these findings consistent with?
A. Chronic liver disease
B. Obstructive jaundice
C. Hemolytic anemia
D. Early hepatitis D
True or false? Chloride is the major extracellular anion in plasma. True
, The sweat test for chloride is used as a screening test for:
A. Parkinson's disease
B. Cystic fibrosis
C. Pancreatitis
D. Hyper- or hypochloremia
E. Hyperkinetic disorders B
Which of the following electrolytes would be increased in the serum if the blood specimen was
hemolyzed?
A. Potassium only
B. Potassium, chloride and phosphate
C. Chloride and sodium
D. Bicarbonate, potassium, and phosphate
E. A
True or false? Blood is drawn into a Vacutainer tube and allowed to clot. If the serum is not
separated from the cells, the serum potassium will tend to decrease and the serum sodium will
tend to increase False
Answers
The LDL cholesterol for this patient would be ____________ mg/dL.
A. 160
B. 200
C. 240
D. 300 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
This patient's LDL cholesterol is:
A. Optimal
,B. Desirable
C. Borderline
D. High D
Which of the following results would be the most consistent with high risk for coronary heart
disease?
A. 20 mg/dL HDL cholesterol and 250 mg/dL total cholesterol
B. 35 mg/dL HDL cholesterol and 200 mg/dL total cholesterol
C. 50 mg/dL HDL cholesterol and 190 mg/dL total cholesterol
D. 55 mg/dL HDL cholesterol and 180 mg/dL total cholesterol
E. 60 mg/dL HDL cholesterol and 170 mg/dL total cholesterol A
Serum bilirubin is unstable because of:
A. Light sensitivity
B. Precipitation due to acid pH
C. Digestion by proteolytic enzymes
D. Precipitates on standing A
,A 21-year-old man with nausea, vomiting, and jaundice has the following laboratory findings:
Total serum bilirubin 8.5 mg/dL (normal 0-1.0 mg/dL)
Direct serum bilirubin 6.1 mg/dL (normal 0-0.5 mg/dL)
Urine urobilinogen Increased
Urine bilirubin Positive
AST 200 U/L (normal 0-50 μ/L)
ALP 160 U/L (normal 0-150 μ/L)
What disease state are these findings consistent with?
A. Chronic liver disease
B. Obstructive jaundice
C. Hemolytic anemia
D. Early hepatitis D
True or false? Chloride is the major extracellular anion in plasma. True
, The sweat test for chloride is used as a screening test for:
A. Parkinson's disease
B. Cystic fibrosis
C. Pancreatitis
D. Hyper- or hypochloremia
E. Hyperkinetic disorders B
Which of the following electrolytes would be increased in the serum if the blood specimen was
hemolyzed?
A. Potassium only
B. Potassium, chloride and phosphate
C. Chloride and sodium
D. Bicarbonate, potassium, and phosphate
E. A
True or false? Blood is drawn into a Vacutainer tube and allowed to clot. If the serum is not
separated from the cells, the serum potassium will tend to decrease and the serum sodium will
tend to increase False
