BOC CHEMISTRY Actual Exam Questions with 100%
Correct Answers| Verified Solutions Latest
2024/2025 u pdate
In the fasting state, the arterial and capillary blood glucose concentration varies from
the venous glucose concentration by approximately how many mg/dl?
a. 1 mg/dl
b. 5 mg/dl
c. 10 mg/dl
d. 15 mg/dl - ✔✔b
The conversion of glucose or other hexoses into lactate or pyruvate is called:
a. glycogenesis
b. glycogenolysis
c. gluconeogenesis
d. glycolysis - ✔✔d
Which one of the following values obtained during a glucose tolerance test are
diagnostic of diabetes mellitus?
a. 2-hour specimen= 150 mg/dl
b. fasting plasma glucose= 126 mg/dl
c. fasting plasma glucose= 110 mg/dl
d. 2- hour specimen= 180 mg/dl - ✔✔b
Monitoring long-term glucose control in patients with adult onset diabetes mellitus can
best be accomplished by measuring:
,a. weekly fasting 7 am serum glucose
b.glucose tolerance testing
c. 2-hour postprandial serum glucose
d. HgbA1C - ✔✔d
A patient with type 1, insulin-dependent diabetes mellitus has the following results:
fasting blood glucose: 150 mg/dl RR:70-110
HgbA1C: 8.5% RR:4.0-6.0
fructosamine: 2.2 mmol/L RR: 2.0-2.9
After reviewing these test results, the technologist should concluded that the patient is
in a:
a. "steady state" of metabolic control
b. state of flux, progressively worsening metabolic control
c. improving state of metabolic control as indicated by fructosamine
d. state of flux as indicted by the fasting glucose level - ✔✔c
Total glycosylated hemoglobin levels in a hemolysate reflect the:
a. average blood glucose levels of the past 2-3 months
b. average blood glucose levels for the past week
c. blood glucose level at the time the sample is drawn
d. HgbA1c level at the time the sample is drawn - ✔✔a
Which of the following glycosylated hemoglobins is recommended by the ADA
guidelines for testing diabetic patients?
a. HgbA1a
,b. HgbA2
c. HgbA1b
d. HgbA1c - ✔✔d
A patient with hemolytic anemia will
a. show a decrease in glycated Hgb value
b. show an increase in glycated Hgb value
c. show little or no change in glycated Hgb value
d. demonstrate an elevated HgbA1 - ✔✔a
In using ion-exchange chromatographic methods, falsely increased levels of HgbA1c
might be demonstrated in the presence of
a. iron deficiency anemia
b. pernicious anemia
c. thalassemias
d. HgbS - ✔✔d
An increase in serum acetone is indicative of a defect in the metabolism of
a. carbohydrates
b. fat
c. urea nitrogen
d. uric acid - ✔✔a
An infant with diarrhea is being evaluated for a carbohydrate intolerance. His stool
yields a positive copper reduction test and a pH of 5.0. It should be concluded that:
a. further tests are indicated
, b. results are inconsistent-repeat both tests
c. the diarrhea is not due to carbohydrate intolerance
d. the tests provided no useful information - ✔✔a
Blood samples were collected at the beginning of an exercise class and after thirty
minutes of aerobic activity. Which of the following would be most consistent with the
post-exercise sample?
a. normal lactic acid, low pyruvate
b. low lactic acid, elevated pyruvate
c. elevated lactic acid, low pyruvate
d. elevated lactic acid, elevated pyruvate - ✔✔d
What is the best method to diagnose lactase deficiency?
a. H2 breath test
b. plasma aldolase level
c. LDH level
d. D-xylose test - ✔✔a
In a specimen collected for plasma glucose analysis, sodium fluoride:
a. serves as a coenzyme of hexokinase
b. prevents reactivity of non glucose reducing substances
c. precipitates proteins
d. inhibits glycolysis - ✔✔d
Which of the following serum constituents is unstable if a blood specimen is left
standing at room temperature for 8 hours before processing?
Correct Answers| Verified Solutions Latest
2024/2025 u pdate
In the fasting state, the arterial and capillary blood glucose concentration varies from
the venous glucose concentration by approximately how many mg/dl?
a. 1 mg/dl
b. 5 mg/dl
c. 10 mg/dl
d. 15 mg/dl - ✔✔b
The conversion of glucose or other hexoses into lactate or pyruvate is called:
a. glycogenesis
b. glycogenolysis
c. gluconeogenesis
d. glycolysis - ✔✔d
Which one of the following values obtained during a glucose tolerance test are
diagnostic of diabetes mellitus?
a. 2-hour specimen= 150 mg/dl
b. fasting plasma glucose= 126 mg/dl
c. fasting plasma glucose= 110 mg/dl
d. 2- hour specimen= 180 mg/dl - ✔✔b
Monitoring long-term glucose control in patients with adult onset diabetes mellitus can
best be accomplished by measuring:
,a. weekly fasting 7 am serum glucose
b.glucose tolerance testing
c. 2-hour postprandial serum glucose
d. HgbA1C - ✔✔d
A patient with type 1, insulin-dependent diabetes mellitus has the following results:
fasting blood glucose: 150 mg/dl RR:70-110
HgbA1C: 8.5% RR:4.0-6.0
fructosamine: 2.2 mmol/L RR: 2.0-2.9
After reviewing these test results, the technologist should concluded that the patient is
in a:
a. "steady state" of metabolic control
b. state of flux, progressively worsening metabolic control
c. improving state of metabolic control as indicated by fructosamine
d. state of flux as indicted by the fasting glucose level - ✔✔c
Total glycosylated hemoglobin levels in a hemolysate reflect the:
a. average blood glucose levels of the past 2-3 months
b. average blood glucose levels for the past week
c. blood glucose level at the time the sample is drawn
d. HgbA1c level at the time the sample is drawn - ✔✔a
Which of the following glycosylated hemoglobins is recommended by the ADA
guidelines for testing diabetic patients?
a. HgbA1a
,b. HgbA2
c. HgbA1b
d. HgbA1c - ✔✔d
A patient with hemolytic anemia will
a. show a decrease in glycated Hgb value
b. show an increase in glycated Hgb value
c. show little or no change in glycated Hgb value
d. demonstrate an elevated HgbA1 - ✔✔a
In using ion-exchange chromatographic methods, falsely increased levels of HgbA1c
might be demonstrated in the presence of
a. iron deficiency anemia
b. pernicious anemia
c. thalassemias
d. HgbS - ✔✔d
An increase in serum acetone is indicative of a defect in the metabolism of
a. carbohydrates
b. fat
c. urea nitrogen
d. uric acid - ✔✔a
An infant with diarrhea is being evaluated for a carbohydrate intolerance. His stool
yields a positive copper reduction test and a pH of 5.0. It should be concluded that:
a. further tests are indicated
, b. results are inconsistent-repeat both tests
c. the diarrhea is not due to carbohydrate intolerance
d. the tests provided no useful information - ✔✔a
Blood samples were collected at the beginning of an exercise class and after thirty
minutes of aerobic activity. Which of the following would be most consistent with the
post-exercise sample?
a. normal lactic acid, low pyruvate
b. low lactic acid, elevated pyruvate
c. elevated lactic acid, low pyruvate
d. elevated lactic acid, elevated pyruvate - ✔✔d
What is the best method to diagnose lactase deficiency?
a. H2 breath test
b. plasma aldolase level
c. LDH level
d. D-xylose test - ✔✔a
In a specimen collected for plasma glucose analysis, sodium fluoride:
a. serves as a coenzyme of hexokinase
b. prevents reactivity of non glucose reducing substances
c. precipitates proteins
d. inhibits glycolysis - ✔✔d
Which of the following serum constituents is unstable if a blood specimen is left
standing at room temperature for 8 hours before processing?
