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California Medical Laboratory Technician (MLT)
Licensing Exam QUESTIONS AND DETAILED
SOLUTIONS JUST RELEASED
California Medical Laboratory Technician (MLT) Licensing Exam, based on the official ASCP BOC
Content Guideline for CMLT and California CDPH regulations .
POINT-FORM SUMMARIZED EXAM COVERAGE (California MLT)
• Exam Model & Administration: Computer Adaptive Testing (CAT) consisting of 80 multiple-
choice questions with a 2-hour time limit; the difficulty adjusts based on previous answers, and
there is no set passing score or fixed percentage—performance is measured against a
determined pass point .
• Licensing Context: California requires candidates to hold an MLT Trainee License from CDPH
Laboratory Field Services (LFS) before applying, complete 60 semester units (including 36 in
biological/chemical sciences), and pass an approved national exam before applying for full state
licensure .
• State Law Component: Beyond the national exam, applicants must also pass the California
supplemental quiz covering state laboratory laws and regulations specific to clinical lab
practice .
• Core Subject Area 1 – Urinalysis & Body Fluids (10% of exam): Physical and chemical testing of
urine (color, clarity, specific gravity, reagent strip methods), microscopic analysis (cells, casts,
crystals, microorganisms), renal physiology, and evaluation of other body fluids such as CSF,
synovial, amniotic, and serous fluids .
• Core Subject Area 2 – Chemistry (40% of exam): The largest section covering carbohydrate
metabolism and testing (glucose, tolerance tests, HbA1c), lipid panels (cholesterol, triglycerides,
lipoproteins), heme derivatives (bilirubin, urobilinogen), enzymes (LD, CK, AST, ALT, ALP, GGT,
lipase, amylase), proteins and nitrogen compounds (total protein, albumin, BUN, creatinine, uric
acid, ammonia), blood gases and acid-base balance (pH, pCO2, pO2, bicarbonates, Henderson-
Hasselbalch equation), electrolytes (sodium, potassium, chloride, calcium, magnesium,
phosphorus), endocrinology (thyroid, cortisol, insulin, hCG), therapeutic drug monitoring
(digoxin, phenytoin, lithium, aminoglycosides), and toxicology (alcohols, salicylates,
acetaminophen, drugs of abuse) .
• Core Subject Area 3 – Hematology (20% of exam): Physiology of blood cell production and
destruction (erythropoiesis, leukopoiesis), anemias (microcytic, normocytic, macrocytic,
hemolytic, hemoglobinopathies such as sickle cell), erythrocytosis, leukocyte disorders (benign
and neoplastic including leukemias by WHO classification), platelet disorders
(thrombocytopenia, thrombocytosis), coagulation and hemostasis (PT, PTT, platelet function,
coagulation factors, fibrinolysis) .
• Core Subject Area 4 – Immunology & Serology (10% of exam): Principles of antigen-antibody
reactions, immune system disorders (autoimmune diseases, immunodeficiencies), infectious
disease serology (viral hepatitis, HIV, syphilis, rubella, mononucleosis), serologic test methods
(ELISA, agglutination, immunofluorescence), interpretation of autoimmune markers (ANA, RF) .
• Core Subject Area 5 – Microbiology (5% of exam): Pre-analytical procedures (specimen
collection, transport, processing), Gram stain principles and procedures, basic organism
identification (common bacteria, fungi, parasites), and culture techniques .
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• Core Subject Area 6 – Laboratory Operations (15% of exam): Quality assessment and quality
control (Levey-Jennings charts, Westgard rules), laboratory safety (chemical, biological, fire
safety, PPE, waste disposal), laboratory mathematics (dilutions, concentrations, cell counts,
molarity), manual vs. automated methodologies, instrumentation principles
(spectrophotometry, fluorometry, centrifugation, chromatography), and regulatory compliance
(CLIA, OSHA, HIPAA) .
1. A medical laboratory technician in California must hold which of the following before beginning a
clinical training program?
A) A CLS generalist license issued by CDPH
B) A valid MLT Trainee license issued by CDPH Laboratory Field Services
C) A national certification from the American Medical Technologists (AMT)
D) A bachelor's degree in clinical laboratory science
Answer: B
Rationale: California regulations require applicants to possess a valid MLT Trainee license from CDPH
before entering a training program .
2. What is the format of the California MLT national certification examination administered by ASCP?
A) A fixed 200-question paper-based test requiring 4 hours to complete
B) An oral examination evaluated by a panel of laboratory directors
C) A computer adaptive test (CAT) with 80 multiple-choice questions delivered in 2 hours
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D) A practical hands-on examination performed on simulated patient specimens
Answer: C
Rationale: The ASCP CMLT examination uses CAT format, presenting 80 multiple-choice questions over 2
hours .
3. A technologist must pass both the national ASCP examination and an additional assessment on
state-specific requirements. What is this second component called?
A) The California Clinical Laboratory Practical Skills Assessment
B) The online California quiz on state laboratory laws and regulations
C) The CDPH Safety and Ethics Certification Examination
D) The NAACLS competency verification examination
Answer: B
Rationale: Applicants must achieve satisfactory performance on an examination covering California
clinical laboratory law .
4. How many semester credit hours in chemistry and biology are minimally required for California MLT
licensure?
A) 3 semester hours in chemistry and 3 semester hours in biology
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B) 6 semester hours in chemistry and 6 semester hours in biology
C) 16 semester hours in chemistry and 18 semester hours in biology
D) 10 semester hours in any combination of physical sciences
Answer: B
Rationale: MLT applicants need at least 6 semester hours in chemistry and 6 semester hours in biology
as part of the 36-hour science requirement .
5. A laboratory director asks about the total number of semester or quarter units required for MLT
licensure in California. What is the minimum?
A) 30 semester units with no specific science requirement
B) 45 semester units including 20 hours of clinical rotations
C) 60 semester or equivalent quarter credit hours
D) A bachelor's degree in any field with 2 years of experience
Answer: C
Rationale: Applicants must document completion of at least 60 semester or equivalent quarter credit
hours from an accredited college .
California Medical Laboratory Technician (MLT)
Licensing Exam QUESTIONS AND DETAILED
SOLUTIONS JUST RELEASED
California Medical Laboratory Technician (MLT) Licensing Exam, based on the official ASCP BOC
Content Guideline for CMLT and California CDPH regulations .
POINT-FORM SUMMARIZED EXAM COVERAGE (California MLT)
• Exam Model & Administration: Computer Adaptive Testing (CAT) consisting of 80 multiple-
choice questions with a 2-hour time limit; the difficulty adjusts based on previous answers, and
there is no set passing score or fixed percentage—performance is measured against a
determined pass point .
• Licensing Context: California requires candidates to hold an MLT Trainee License from CDPH
Laboratory Field Services (LFS) before applying, complete 60 semester units (including 36 in
biological/chemical sciences), and pass an approved national exam before applying for full state
licensure .
• State Law Component: Beyond the national exam, applicants must also pass the California
supplemental quiz covering state laboratory laws and regulations specific to clinical lab
practice .
• Core Subject Area 1 – Urinalysis & Body Fluids (10% of exam): Physical and chemical testing of
urine (color, clarity, specific gravity, reagent strip methods), microscopic analysis (cells, casts,
crystals, microorganisms), renal physiology, and evaluation of other body fluids such as CSF,
synovial, amniotic, and serous fluids .
• Core Subject Area 2 – Chemistry (40% of exam): The largest section covering carbohydrate
metabolism and testing (glucose, tolerance tests, HbA1c), lipid panels (cholesterol, triglycerides,
lipoproteins), heme derivatives (bilirubin, urobilinogen), enzymes (LD, CK, AST, ALT, ALP, GGT,
lipase, amylase), proteins and nitrogen compounds (total protein, albumin, BUN, creatinine, uric
acid, ammonia), blood gases and acid-base balance (pH, pCO2, pO2, bicarbonates, Henderson-
Hasselbalch equation), electrolytes (sodium, potassium, chloride, calcium, magnesium,
phosphorus), endocrinology (thyroid, cortisol, insulin, hCG), therapeutic drug monitoring
(digoxin, phenytoin, lithium, aminoglycosides), and toxicology (alcohols, salicylates,
acetaminophen, drugs of abuse) .
• Core Subject Area 3 – Hematology (20% of exam): Physiology of blood cell production and
destruction (erythropoiesis, leukopoiesis), anemias (microcytic, normocytic, macrocytic,
hemolytic, hemoglobinopathies such as sickle cell), erythrocytosis, leukocyte disorders (benign
and neoplastic including leukemias by WHO classification), platelet disorders
(thrombocytopenia, thrombocytosis), coagulation and hemostasis (PT, PTT, platelet function,
coagulation factors, fibrinolysis) .
• Core Subject Area 4 – Immunology & Serology (10% of exam): Principles of antigen-antibody
reactions, immune system disorders (autoimmune diseases, immunodeficiencies), infectious
disease serology (viral hepatitis, HIV, syphilis, rubella, mononucleosis), serologic test methods
(ELISA, agglutination, immunofluorescence), interpretation of autoimmune markers (ANA, RF) .
• Core Subject Area 5 – Microbiology (5% of exam): Pre-analytical procedures (specimen
collection, transport, processing), Gram stain principles and procedures, basic organism
identification (common bacteria, fungi, parasites), and culture techniques .
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• Core Subject Area 6 – Laboratory Operations (15% of exam): Quality assessment and quality
control (Levey-Jennings charts, Westgard rules), laboratory safety (chemical, biological, fire
safety, PPE, waste disposal), laboratory mathematics (dilutions, concentrations, cell counts,
molarity), manual vs. automated methodologies, instrumentation principles
(spectrophotometry, fluorometry, centrifugation, chromatography), and regulatory compliance
(CLIA, OSHA, HIPAA) .
1. A medical laboratory technician in California must hold which of the following before beginning a
clinical training program?
A) A CLS generalist license issued by CDPH
B) A valid MLT Trainee license issued by CDPH Laboratory Field Services
C) A national certification from the American Medical Technologists (AMT)
D) A bachelor's degree in clinical laboratory science
Answer: B
Rationale: California regulations require applicants to possess a valid MLT Trainee license from CDPH
before entering a training program .
2. What is the format of the California MLT national certification examination administered by ASCP?
A) A fixed 200-question paper-based test requiring 4 hours to complete
B) An oral examination evaluated by a panel of laboratory directors
C) A computer adaptive test (CAT) with 80 multiple-choice questions delivered in 2 hours
, Page 3 of 130
D) A practical hands-on examination performed on simulated patient specimens
Answer: C
Rationale: The ASCP CMLT examination uses CAT format, presenting 80 multiple-choice questions over 2
hours .
3. A technologist must pass both the national ASCP examination and an additional assessment on
state-specific requirements. What is this second component called?
A) The California Clinical Laboratory Practical Skills Assessment
B) The online California quiz on state laboratory laws and regulations
C) The CDPH Safety and Ethics Certification Examination
D) The NAACLS competency verification examination
Answer: B
Rationale: Applicants must achieve satisfactory performance on an examination covering California
clinical laboratory law .
4. How many semester credit hours in chemistry and biology are minimally required for California MLT
licensure?
A) 3 semester hours in chemistry and 3 semester hours in biology
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B) 6 semester hours in chemistry and 6 semester hours in biology
C) 16 semester hours in chemistry and 18 semester hours in biology
D) 10 semester hours in any combination of physical sciences
Answer: B
Rationale: MLT applicants need at least 6 semester hours in chemistry and 6 semester hours in biology
as part of the 36-hour science requirement .
5. A laboratory director asks about the total number of semester or quarter units required for MLT
licensure in California. What is the minimum?
A) 30 semester units with no specific science requirement
B) 45 semester units including 20 hours of clinical rotations
C) 60 semester or equivalent quarter credit hours
D) A bachelor's degree in any field with 2 years of experience
Answer: C
Rationale: Applicants must document completion of at least 60 semester or equivalent quarter credit
hours from an accredited college .
