Texas Medical Laboratory Technician
Certification Practice Exam Questions
And Correct Answers (Verified Answers)
Plus Rationales 2025 Q&A | Instant
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1. Which of the following anticoagulants is used in blood collection for
hematology tests?
A. Sodium citrate
B. Potassium oxalate
C. EDTA
D. Heparin
EDTA preserves cellular components and morphology, making it ideal for
hematology tests.
2. Which type of white blood cell is most numerous in a normal
peripheral blood smear?
A. Lymphocyte
B. Neutrophil
C. Monocyte
D. Eosinophil
,Neutrophils are the most abundant white blood cells and are the first
responders to infection.
3. Which of the following urine tests is most specific for detecting
glucose?
A. Clinitest
B. Glucose oxidase
C. Benedict’s test
D. Ictotest
Glucose oxidase specifically reacts with glucose, making it more accurate
for detection in urine.
4. Which test is used to monitor long-term glucose control in diabetic
patients?
A. Fasting blood glucose
B. Hemoglobin A1c
C. Oral glucose tolerance test
D. Random blood glucose
Hemoglobin A1c reflects average blood glucose levels over 2–3 months.
5. Which of the following components is NOT part of the complete blood
count (CBC)?
A. Hematocrit
B. Platelet count
C. Prothrombin time
D. White blood cell count
Prothrombin time is a coagulation test and is not included in a standard
CBC.
, 6. Which of the following best describes the function of a
spectrophotometer?
A. Count blood cells
B. Separate serum from plasma
C. Measure light absorbance of a solution
D. Identify microorganisms
Spectrophotometers measure absorbance at specific wavelengths to
quantify solutes in a sample.
7. Which of the following is a confirmatory test for HIV?
A. ELISA
B. Western blot
C. PCR
D. Rapid test
Western blot is the traditional confirmatory test after a positive ELISA
result.
8. The presence of ketones in urine most commonly indicates:
A. Urinary tract infection
B. Bacterial contamination
C. Fat metabolism
D. Protein breakdown
Ketones are produced when fat is used for energy due to lack of
carbohydrates, often in diabetes.
9. Which microorganism is a Gram-positive cocci in clusters?
A. Streptococcus pyogenes
B. Neisseria gonorrhoeae
Certification Practice Exam Questions
And Correct Answers (Verified Answers)
Plus Rationales 2025 Q&A | Instant
Download Pdf
1. Which of the following anticoagulants is used in blood collection for
hematology tests?
A. Sodium citrate
B. Potassium oxalate
C. EDTA
D. Heparin
EDTA preserves cellular components and morphology, making it ideal for
hematology tests.
2. Which type of white blood cell is most numerous in a normal
peripheral blood smear?
A. Lymphocyte
B. Neutrophil
C. Monocyte
D. Eosinophil
,Neutrophils are the most abundant white blood cells and are the first
responders to infection.
3. Which of the following urine tests is most specific for detecting
glucose?
A. Clinitest
B. Glucose oxidase
C. Benedict’s test
D. Ictotest
Glucose oxidase specifically reacts with glucose, making it more accurate
for detection in urine.
4. Which test is used to monitor long-term glucose control in diabetic
patients?
A. Fasting blood glucose
B. Hemoglobin A1c
C. Oral glucose tolerance test
D. Random blood glucose
Hemoglobin A1c reflects average blood glucose levels over 2–3 months.
5. Which of the following components is NOT part of the complete blood
count (CBC)?
A. Hematocrit
B. Platelet count
C. Prothrombin time
D. White blood cell count
Prothrombin time is a coagulation test and is not included in a standard
CBC.
, 6. Which of the following best describes the function of a
spectrophotometer?
A. Count blood cells
B. Separate serum from plasma
C. Measure light absorbance of a solution
D. Identify microorganisms
Spectrophotometers measure absorbance at specific wavelengths to
quantify solutes in a sample.
7. Which of the following is a confirmatory test for HIV?
A. ELISA
B. Western blot
C. PCR
D. Rapid test
Western blot is the traditional confirmatory test after a positive ELISA
result.
8. The presence of ketones in urine most commonly indicates:
A. Urinary tract infection
B. Bacterial contamination
C. Fat metabolism
D. Protein breakdown
Ketones are produced when fat is used for energy due to lack of
carbohydrates, often in diabetes.
9. Which microorganism is a Gram-positive cocci in clusters?
A. Streptococcus pyogenes
B. Neisseria gonorrhoeae
