(All Inclusive) BOC Chemistry (MLT only) Practice Test|
MLT Chemistry | MLT Clinical Chemistry (MEDICAL
LABORATORY TECHNICIANS Chemistry) Questions Ansd
Answers /2024/2025 Gurantee Guide
Following overnight fasting, hypoglycemia in adults is defined as a glucose of:
≤70 mg/dL (≤3.9 mmol/L)
≤60 mg/dL (≤3.3 mmol/L)
≤55 mg/dL (≤3.0 mmol/L)
≤45 mg/dL (≤2.5 mmol/L) - ANSWER≤45 mg/dL (≤2.5 mmol/L)
The following results are from a 21-year-old patient with a back injury who appears
otherwise healthy:
Whole blood glucose: 77 mg/dL (4.2 mmol/L)
Serum glucose: 88 mg/dL (4.8 mmol/L)
CSF glucose: 56 mg/dL (3.1 mmol/L)
The best interpretation of these results is that:
The whole blood and serum values are expected but the CSF value is elevated
The whole blood glucose value should be higher than the serum value
All values are consistent with a normal healthy individual
The serum and whole blood values should be identical - ANSWERAll values are
consistent with a normal healthy individual
The preparation of a patient for standard glucose tolerance testing should include:
A high carbohydrate diet for 3 days
A low carbohydrate diet for 3 days
Fasting for 48 hours prior to testing
Bed rest for 3 days - ANSWERA high carbohydrate diet for 3 days
If a fasting glucose was 90 mg/dL, which of the following 2-hour postprandial glucose
results would most closely represent normal glucose metabolism?
55 mg/dL (3.0 mmol/L)
100 mg/dL (5.5 mmol/L)
180 mg/dL (9.9 mmol/L)
260 mg/dL (14.3 mmol/L) - ANSWER100 mg/dL (5.5 mmol/L)
A healthy person with a blood glucose of 80 mg/dL (4.4 mmol/L) would have a
simultaneously determined cerebrospinal fluid glucose value of:
,25 mg/dL (1.4 mmol/L)
50 mg/dL (2.3 mmol/L)
100 mg/dL (5.5 mmol/L)
150 mg/dL (8.3 mmol/L) - ANSWER50 mg/dL (2.3 mmol/L)
A 25-year-old man became nauseated and vomited 90 minutes after receiving a
standard 75 g carbohydrate dose for an oral glucose tolerance test. The best course
of action is to:
Give the patient a glass of orange juice and continue the test
Start the test over immediately with a 50 g carbohydrate dose
Draw blood for glucose and discontinue test
Place the patient in a recumbent position, reassure him and continue the test -
ANSWERDraw blood food glucose and discontinue test
Cerebrospinal fluid for glucose assay should be:
Refrigerated
Analyzed immediately
Heated to 56°C
Stored at room temperature after centrifugation - ANSWERAnalyzed immediately
Which of the following 2 hour postprandial glucose values demonstrates unequivocal
hyperglycemia diagnostic for diabetes mellitus?
160 mg/dL (8.8 mmol/L)
170 mg/dL (9.4 mmol/L)
180 mg/dL (9.9 mmol/L)
200 mg/dL (11.0 mmol/L) - ANSWER200 mg/dL (11.0 mmol/L)
Serum levels that define hypoglycemia in pre-term or low birth weight infants are:
The sam was adults
Lower than adults
The same as a normal full-term infant
Higher than a normal full-term infant - ANSWERLower than adults
A 45-year-old woman has a fasting serum glucose concentration of 95 mg/dL (5.2
mmol/L) and a 2-hour postprandial glucose concentration of 105 mg/dL (5.8
mmol/L). The statement which best describes this patients fasting serum glucose
concentration is:
Normal; reflecting glycogen breakdown by the liver
Normal; reflecting glycogen breakdown by the skeletal muscle
Abnormal; indicating diabetes mellitus
Abnormal; indicating hypoglycemia - ANSWERNormal; reflecting glycogen
breakdown by the liver
,Pregnant women with symptoms of thirst, frequent urination or unexplained weight
loss should have which of the following tests performed?
Tolbutamide test
Lactose tolerance test
Epinephrine tolerance test
Glucose tolerance test - ANSWERGlucose tolerance test
In the fasting state, the arterial and capillary blood glucose concentration varies from
the venous glucose concentration by approximately how many mg/dL (mmol/L)?
1 mg/dL (0.05 mmol/L) higher
5 mg/dL (0.27 mmol/L) higher
10 mg/dL (0.55 mmol/L) lower
15 mg/dL (0.82 mmol/L) lower - ANSWER5 mg/dL (0.27 mmol/L) higher
The conversion of glucose or other hexoses into lactate or pyruvate is called:
Glycogenesis
Glycogenolysis
Gluconeogenesis
Glycolysis - ANSWERGlycolysis
Which one of the following values obtained during a glucose tolerance test are
diagnostic of diabetes mellitus?
2-hour specimen = 150 mg/dL (8.3 mmol/L)
Fasting plasma glucose = 126 mg/dL (6.9 mmol/L)
Fasting plasma glucose = 110 mg/dL (6.1 mmol/L)
2-hour specimen = 180 mg/dL (9.9 mmol/L) - ANSWERFasting plasma glucose = 126
mg/dL (6.9 mmol/L)
The glycated hemoglobin value represents the integrated values of glucose
concentration during the preceding:
1-3 weeks
4-5 weeks
6-8 weeks
16-20 weeks - ANSWER6-8 weeks
Monitoring long-term glucose control in patients with adult onset diabetes mellitus
can best be accomplished by measuring:
Weekly fasting 7 am serum glucose
Glucose tolerance testing
2-hour postprandial serum glucose
, Hemoglobin A₁c - ANSWERHemoglobin A₁c
A patient with Type I, insulin-dependent diabetes mellitus has the following results:
Fasting blood glucose: 150 mg/dL (8.3 mmol/L) [70-110 mg/dL (3.9-6.1 mmol/L)]
Hemoglobin A₁c: 8.5% [4.0-6.0%]
Fructosamine: 2.5 mmol/L [2.0-2.9 mmol/L]
After reviewing these test results, the technologist concluded that the patient is in a:
"Steady state" of metabolic control
State of flux, progressively worsening metabolic control
Improving state of metabolic control as indicated by fructosamine
State of flux as indicated by the fasting glucose level - ANSWERImproving state of
metabolic control as indicated by fructosamine
Total glycosylated hemoglobin levels in a hemolysate reflect the:
Average blood glucose levels of the past 2-3 months
Average blood glucose levels for the past week
Blood glucose level at the time the sample is drawn
Hemoglobin A₁c level at the time the sample is drawn - ANSWERAverage blood
glucose levels of the past 2-3 months
Which of the following hemoglobins has glucose-6-phosphate on the amino-terminal
valine of the beta chain?
S
C
A₂
A₁c - ANSWERA₁c
A patient with hemolytic anemia will:
Show a decrease in glycated Hgb value
Show an increase in glycated Hgb value
Show little or no change in glycated Hgb value
Demonstrate an elevated Hgb A₁ - ANSWERShow a decrease in glycated Hgb value
In using ion-exchange chromatographic methods, falsely increased levels of Hgb A₁c
might be demonstrated in the presence of:
Iron deficiency anemia
Pernicious anemia
Thalassemias
Hgb S - ANSWERHgb S
MLT Chemistry | MLT Clinical Chemistry (MEDICAL
LABORATORY TECHNICIANS Chemistry) Questions Ansd
Answers /2024/2025 Gurantee Guide
Following overnight fasting, hypoglycemia in adults is defined as a glucose of:
≤70 mg/dL (≤3.9 mmol/L)
≤60 mg/dL (≤3.3 mmol/L)
≤55 mg/dL (≤3.0 mmol/L)
≤45 mg/dL (≤2.5 mmol/L) - ANSWER≤45 mg/dL (≤2.5 mmol/L)
The following results are from a 21-year-old patient with a back injury who appears
otherwise healthy:
Whole blood glucose: 77 mg/dL (4.2 mmol/L)
Serum glucose: 88 mg/dL (4.8 mmol/L)
CSF glucose: 56 mg/dL (3.1 mmol/L)
The best interpretation of these results is that:
The whole blood and serum values are expected but the CSF value is elevated
The whole blood glucose value should be higher than the serum value
All values are consistent with a normal healthy individual
The serum and whole blood values should be identical - ANSWERAll values are
consistent with a normal healthy individual
The preparation of a patient for standard glucose tolerance testing should include:
A high carbohydrate diet for 3 days
A low carbohydrate diet for 3 days
Fasting for 48 hours prior to testing
Bed rest for 3 days - ANSWERA high carbohydrate diet for 3 days
If a fasting glucose was 90 mg/dL, which of the following 2-hour postprandial glucose
results would most closely represent normal glucose metabolism?
55 mg/dL (3.0 mmol/L)
100 mg/dL (5.5 mmol/L)
180 mg/dL (9.9 mmol/L)
260 mg/dL (14.3 mmol/L) - ANSWER100 mg/dL (5.5 mmol/L)
A healthy person with a blood glucose of 80 mg/dL (4.4 mmol/L) would have a
simultaneously determined cerebrospinal fluid glucose value of:
,25 mg/dL (1.4 mmol/L)
50 mg/dL (2.3 mmol/L)
100 mg/dL (5.5 mmol/L)
150 mg/dL (8.3 mmol/L) - ANSWER50 mg/dL (2.3 mmol/L)
A 25-year-old man became nauseated and vomited 90 minutes after receiving a
standard 75 g carbohydrate dose for an oral glucose tolerance test. The best course
of action is to:
Give the patient a glass of orange juice and continue the test
Start the test over immediately with a 50 g carbohydrate dose
Draw blood for glucose and discontinue test
Place the patient in a recumbent position, reassure him and continue the test -
ANSWERDraw blood food glucose and discontinue test
Cerebrospinal fluid for glucose assay should be:
Refrigerated
Analyzed immediately
Heated to 56°C
Stored at room temperature after centrifugation - ANSWERAnalyzed immediately
Which of the following 2 hour postprandial glucose values demonstrates unequivocal
hyperglycemia diagnostic for diabetes mellitus?
160 mg/dL (8.8 mmol/L)
170 mg/dL (9.4 mmol/L)
180 mg/dL (9.9 mmol/L)
200 mg/dL (11.0 mmol/L) - ANSWER200 mg/dL (11.0 mmol/L)
Serum levels that define hypoglycemia in pre-term or low birth weight infants are:
The sam was adults
Lower than adults
The same as a normal full-term infant
Higher than a normal full-term infant - ANSWERLower than adults
A 45-year-old woman has a fasting serum glucose concentration of 95 mg/dL (5.2
mmol/L) and a 2-hour postprandial glucose concentration of 105 mg/dL (5.8
mmol/L). The statement which best describes this patients fasting serum glucose
concentration is:
Normal; reflecting glycogen breakdown by the liver
Normal; reflecting glycogen breakdown by the skeletal muscle
Abnormal; indicating diabetes mellitus
Abnormal; indicating hypoglycemia - ANSWERNormal; reflecting glycogen
breakdown by the liver
,Pregnant women with symptoms of thirst, frequent urination or unexplained weight
loss should have which of the following tests performed?
Tolbutamide test
Lactose tolerance test
Epinephrine tolerance test
Glucose tolerance test - ANSWERGlucose tolerance test
In the fasting state, the arterial and capillary blood glucose concentration varies from
the venous glucose concentration by approximately how many mg/dL (mmol/L)?
1 mg/dL (0.05 mmol/L) higher
5 mg/dL (0.27 mmol/L) higher
10 mg/dL (0.55 mmol/L) lower
15 mg/dL (0.82 mmol/L) lower - ANSWER5 mg/dL (0.27 mmol/L) higher
The conversion of glucose or other hexoses into lactate or pyruvate is called:
Glycogenesis
Glycogenolysis
Gluconeogenesis
Glycolysis - ANSWERGlycolysis
Which one of the following values obtained during a glucose tolerance test are
diagnostic of diabetes mellitus?
2-hour specimen = 150 mg/dL (8.3 mmol/L)
Fasting plasma glucose = 126 mg/dL (6.9 mmol/L)
Fasting plasma glucose = 110 mg/dL (6.1 mmol/L)
2-hour specimen = 180 mg/dL (9.9 mmol/L) - ANSWERFasting plasma glucose = 126
mg/dL (6.9 mmol/L)
The glycated hemoglobin value represents the integrated values of glucose
concentration during the preceding:
1-3 weeks
4-5 weeks
6-8 weeks
16-20 weeks - ANSWER6-8 weeks
Monitoring long-term glucose control in patients with adult onset diabetes mellitus
can best be accomplished by measuring:
Weekly fasting 7 am serum glucose
Glucose tolerance testing
2-hour postprandial serum glucose
, Hemoglobin A₁c - ANSWERHemoglobin A₁c
A patient with Type I, insulin-dependent diabetes mellitus has the following results:
Fasting blood glucose: 150 mg/dL (8.3 mmol/L) [70-110 mg/dL (3.9-6.1 mmol/L)]
Hemoglobin A₁c: 8.5% [4.0-6.0%]
Fructosamine: 2.5 mmol/L [2.0-2.9 mmol/L]
After reviewing these test results, the technologist concluded that the patient is in a:
"Steady state" of metabolic control
State of flux, progressively worsening metabolic control
Improving state of metabolic control as indicated by fructosamine
State of flux as indicated by the fasting glucose level - ANSWERImproving state of
metabolic control as indicated by fructosamine
Total glycosylated hemoglobin levels in a hemolysate reflect the:
Average blood glucose levels of the past 2-3 months
Average blood glucose levels for the past week
Blood glucose level at the time the sample is drawn
Hemoglobin A₁c level at the time the sample is drawn - ANSWERAverage blood
glucose levels of the past 2-3 months
Which of the following hemoglobins has glucose-6-phosphate on the amino-terminal
valine of the beta chain?
S
C
A₂
A₁c - ANSWERA₁c
A patient with hemolytic anemia will:
Show a decrease in glycated Hgb value
Show an increase in glycated Hgb value
Show little or no change in glycated Hgb value
Demonstrate an elevated Hgb A₁ - ANSWERShow a decrease in glycated Hgb value
In using ion-exchange chromatographic methods, falsely increased levels of Hgb A₁c
might be demonstrated in the presence of:
Iron deficiency anemia
Pernicious anemia
Thalassemias
Hgb S - ANSWERHgb S
