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Medical Laboratory Tests and Biomarkers Quiz

#1

Which blood test is commonly used to diagnose diabetes?

Hemoglobin A1c (HbA1c)
Explanation

Measures average blood sugar levels over the past 2-3 months.

#2

Which of the following biomarkers is associated with cardiac muscle damage?

Troponin
Explanation

Indicates heart muscle injury, commonly used in diagnosing heart attacks.

#3

Which of the following is a marker for renal function?

Albumin
Explanation

High levels may indicate kidney damage or disease, used in assessing renal function.

#4

What does the C-reactive protein (CRP) test measure?

Inflammation
Explanation

CRP levels increase during inflammation, aiding in diagnosing infections or chronic inflammatory conditions.

#5

Which of the following is a test used to diagnose autoimmune disorders?

Erythrocyte Sedimentation Rate (ESR)
Explanation

ESR measures the rate at which red blood cells settle in a tube, elevated in inflammation and autoimmune diseases.

#6

Which of the following biomarkers is associated with liver damage?

ALT (Alanine Aminotransferase)
Explanation

ALT levels rise with liver damage, commonly used in diagnosing liver diseases like hepatitis.

#7

Which of the following tests is commonly used to diagnose thyroid disorders?

TSH (Thyroid-stimulating Hormone) test
Explanation

Measures TSH levels, aiding in diagnosing thyroid dysfunction like hypothyroidism or hyperthyroidism.

#8

What is the primary function of a prothrombin time (PT) test?

To evaluate blood clotting ability
Explanation

Assesses how long blood takes to clot, aiding in diagnosing bleeding or clotting disorders.

#9

Which of the following is not a tumor marker?

AST
Explanation

AST is an enzyme indicating liver, heart, or muscle damage; not specifically a tumor marker.

#10

Which of the following is a genetic biomarker for breast cancer susceptibility?

BRCA1
Explanation

Mutations in BRCA1 increase the risk of breast and ovarian cancer.

#11

What does the abbreviation LDH stand for in the context of laboratory testing?

Lactate Dehydrogenase
Explanation

An enzyme indicating tissue damage or disease, including heart attack or liver disease.

#12

What is the primary purpose of a lipid panel test?

To evaluate lipid levels in the blood
Explanation

Assesses cholesterol and triglyceride levels, aiding in assessing cardiovascular health.

#13

Which of the following is a tumor marker associated with ovarian cancer?

CA-125
Explanation

Elevated levels may indicate ovarian cancer, but not definitive for diagnosis.

#14

What is the main function of a urine dipstick test?

To detect abnormalities in the urine
Explanation

Identifies various substances in urine, aiding in diagnosing urinary tract infections, kidney diseases, and other conditions.

#15

What does the acronym PCR stand for in the context of molecular biology?

Polymerase Chain Reaction
Explanation

A technique amplifying DNA, crucial in genetic testing and diagnostics.

#16

Which of the following is a diagnostic test for HIV?

HIV Antigen/Antibody Combination Test
Explanation

Detects both HIV antigens and antibodies, enabling earlier detection of infection.

#17

What is the technique used to detect specific DNA sequences in a sample, such as in genetic testing?

PCR (Polymerase Chain Reaction)
Explanation

Amplifies DNA sequences, crucial for identifying genetic variations and pathogens.

#18

What is the purpose of a culture and sensitivity test?

To identify the presence of bacteria or fungi in a sample
Explanation

Cultures microorganisms to determine the most effective antibiotic or antifungal treatment.

#19

What is the primary purpose of an arterial blood gas (ABG) test?

To assess lung function and acid-base balance
Explanation

Evaluates oxygen and carbon dioxide levels, acidity, and other parameters, aiding in diagnosing respiratory and metabolic disorders.

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