P R O F E S S I O N A L P R A C T I C E M AT E R I A L S
AMT MLS Exam Questions
& Answers Updated
2026/2027 Edition
Verified Answers Exam Ready 210 QUESTIONS
DOCUMENT OVERVIEW
This document provides 210 updated medical laboratory science exam questions with their
correct answers and explanations, including diagrams. It covers a broad spectrum of
laboratory science principles and procedures. This resource is ideal for students preparing
for certification exams, reviewing course material, and reinforcing their understanding of
key concepts.
TOPICS
• Microscopy & Instrumentation • Immunology & Serology
• Laboratory Fundamentals & Safety • Specimen Collection & Handling
• Microbiology • Quality Control & Assurance
• Biochemistry & Clinical Chemistry • Urinalysis & Body Fluids
• Hematology • Blood Banking & Immunohematology
Page 1
, E XA M Q U EST I O N S
Q1 QUESTION 1 OF 210
Which immunoassay methodology is the emission of light by molecules in an excited state
with a limited amount of heat as the result of a chemical reaction?
Question
a.Chemiluminescence
b.Immunochromatography
c.Photometry
d.Spectrophotometry
ANSWER
a. Chemiluminescence
Chemiluminescence is the emission of light by molecules in an excited state with a limited
amount of heat (luminescence) as the result of a chemical reaction. Chemiluminescent assays
are ultrasensitive and are widely used in automated immunoassays and DNA probe assay
systems. Chemiluminescence has excellent sensitivity and dynamic range. Chemiluminescent
labels can be attached to an antigen or an antibody. Most chemiluminescent reagents and
conjugates are stable and relatively nontoxic.
Q2 QUESTION 2 OF 210
What does a common application of the polarized light microscope in the clinical laboratory
do?
Determine FANAs with fluorescence
b.Determine neutrophilic from lymphocytic leukemia
c.Examine histochemical reactions
d.Study crystals in urine and in cells
ANSWER
d. study crystals in urine and cells
Page 2
, Q3 QUESTION 3 OF 210
Which part of the microscope directs and focuses the beam of light from the bulb onto the
material under examination?
a.Aperture
b.C- mount
c.Condenser
d.Diaphragm
ANSWER
Condenser
The condenser is the substage lens of the microscope that focuses light on the specimen slide
Q4 QUESTION 4 OF 210
What is the chemistry methodology that is based on the measurement of electromagnetic
radiation, either absorbed or emitted, at different wavelengths?
a.Fluorometry
b.Nephelometry
c.Photometry
d.Spectrophotometry
ANSWER
Correct Answer: Spectrophotometry
The chemistry methodology that is based on substances of clinical interest selectively absorbs
or emits electromagnetic energy at different wavelengths is spectrophotometry
Q5 QUESTION 5 OF 210
What process documents a specimen the moment it is collected, transported to the
laboratory, analyzed, and reports the results?
a.Calibration
b.Chain of custody
c.Quality assessment
d.Standards
Page 3
, ANSWER
Chain of custody
The links between specimen collection and presentation in court must establish certainty that
the material or specimen tested had not been altered in any way that would change its
usefulness as admissible evidence.
Q6 QUESTION 6 OF 210
What methodology has been incorporated into many automated chemistry analyzers and
utilizes both direct and indirect measurements for electrolyte testing?
a.Chromogenic
b.Ion-selective electrode (ISE) potentiometry
c.Kinetic-turbidimetric
d.Photometric
ANSWER
Correct Answer: Ion-selective electrode (ISE) potentiometry
ISE methods measure the activity of an ion in the water volume fraction in which it is dissolved.
Q7 QUESTION 7 OF 210
Which of the following is one of the most common clinical applications of GC-MS analysis?
a.Antiretroviral testing
b.Confirmation of inborn errors of metabolism
c.Drug testing
d.Screening for genetic disorders
ANSWER
Correct Answer: Drug testing
Screening for and confirmation of genetic disorders and analysis of antiretroviral drugs is
performed by HPLC-MS/MS and HPLC-MS, respectively.
Page 4
AMT MLS Exam Questions
& Answers Updated
2026/2027 Edition
Verified Answers Exam Ready 210 QUESTIONS
DOCUMENT OVERVIEW
This document provides 210 updated medical laboratory science exam questions with their
correct answers and explanations, including diagrams. It covers a broad spectrum of
laboratory science principles and procedures. This resource is ideal for students preparing
for certification exams, reviewing course material, and reinforcing their understanding of
key concepts.
TOPICS
• Microscopy & Instrumentation • Immunology & Serology
• Laboratory Fundamentals & Safety • Specimen Collection & Handling
• Microbiology • Quality Control & Assurance
• Biochemistry & Clinical Chemistry • Urinalysis & Body Fluids
• Hematology • Blood Banking & Immunohematology
Page 1
, E XA M Q U EST I O N S
Q1 QUESTION 1 OF 210
Which immunoassay methodology is the emission of light by molecules in an excited state
with a limited amount of heat as the result of a chemical reaction?
Question
a.Chemiluminescence
b.Immunochromatography
c.Photometry
d.Spectrophotometry
ANSWER
a. Chemiluminescence
Chemiluminescence is the emission of light by molecules in an excited state with a limited
amount of heat (luminescence) as the result of a chemical reaction. Chemiluminescent assays
are ultrasensitive and are widely used in automated immunoassays and DNA probe assay
systems. Chemiluminescence has excellent sensitivity and dynamic range. Chemiluminescent
labels can be attached to an antigen or an antibody. Most chemiluminescent reagents and
conjugates are stable and relatively nontoxic.
Q2 QUESTION 2 OF 210
What does a common application of the polarized light microscope in the clinical laboratory
do?
Determine FANAs with fluorescence
b.Determine neutrophilic from lymphocytic leukemia
c.Examine histochemical reactions
d.Study crystals in urine and in cells
ANSWER
d. study crystals in urine and cells
Page 2
, Q3 QUESTION 3 OF 210
Which part of the microscope directs and focuses the beam of light from the bulb onto the
material under examination?
a.Aperture
b.C- mount
c.Condenser
d.Diaphragm
ANSWER
Condenser
The condenser is the substage lens of the microscope that focuses light on the specimen slide
Q4 QUESTION 4 OF 210
What is the chemistry methodology that is based on the measurement of electromagnetic
radiation, either absorbed or emitted, at different wavelengths?
a.Fluorometry
b.Nephelometry
c.Photometry
d.Spectrophotometry
ANSWER
Correct Answer: Spectrophotometry
The chemistry methodology that is based on substances of clinical interest selectively absorbs
or emits electromagnetic energy at different wavelengths is spectrophotometry
Q5 QUESTION 5 OF 210
What process documents a specimen the moment it is collected, transported to the
laboratory, analyzed, and reports the results?
a.Calibration
b.Chain of custody
c.Quality assessment
d.Standards
Page 3
, ANSWER
Chain of custody
The links between specimen collection and presentation in court must establish certainty that
the material or specimen tested had not been altered in any way that would change its
usefulness as admissible evidence.
Q6 QUESTION 6 OF 210
What methodology has been incorporated into many automated chemistry analyzers and
utilizes both direct and indirect measurements for electrolyte testing?
a.Chromogenic
b.Ion-selective electrode (ISE) potentiometry
c.Kinetic-turbidimetric
d.Photometric
ANSWER
Correct Answer: Ion-selective electrode (ISE) potentiometry
ISE methods measure the activity of an ion in the water volume fraction in which it is dissolved.
Q7 QUESTION 7 OF 210
Which of the following is one of the most common clinical applications of GC-MS analysis?
a.Antiretroviral testing
b.Confirmation of inborn errors of metabolism
c.Drug testing
d.Screening for genetic disorders
ANSWER
Correct Answer: Drug testing
Screening for and confirmation of genetic disorders and analysis of antiretroviral drugs is
performed by HPLC-MS/MS and HPLC-MS, respectively.
Page 4
