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CSMLS MLA PRACTICE TEST 1 – MEDICAL LABORATORY ASSISTANT EXAM QUESTIONS AND CORRECT DETAILED ANSWERS

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Prepare for the Canadian Society for Medical Laboratory Science (CSMLS) Medical Laboratory Assistant (MLA) certification exam with this comprehensive practice test. Contains exam-style questions and correct detailed answers covering all MLA competency domains: phlebotomy (venipuncture, capillary puncture, order of draw, tourniquet use, vein selection, patient identification, specimen collection), anatomy and physiology (kidney function, electrolytes, heart, blood vessels, blood components), laboratory safety (WHMIS, NFPA diamond, biosafety cabinets, autoclave sterilization, chemical spills, TDG classes, PPE), infection control (hand hygiene, specimen transport, biohazard disposal, needle-stick prevention), specimen handling (C&S, PKU testing, 24-hour urine, glucose tolerance test, creatinine clearance, blood compatibility, cross-matching), urinalysis (clean-catch, ketones, bilirubin, urine appearance, microscopy), hematology (CBC, reticulocytes, platelets, ESR, hematocrit, blood smears), microbiology (culture media, throat swabs, Gram stain, heat fixing, anaerobic transport), professional practice (ethics, confidentiality, privacy legislation, Canada Health Act, deontology, utilitarianism, non-maleficence, patient communication, latex allergy, mastectomy, IV sites), quality control (standard deviation, Westgard, reliability), and laboratory mathematics (solution dilution C1V1=C2V2). Essential for CSMLS MLA certification success.

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CSMLS MLA PRACTICE TEST 1

EXAM QUESTIONS AND CORRECT

DETAILED ANSWERS



Which organ balances sodium and potassium in the body?

A.) Bladder

B.) Gastrointestinal tract

C.) Kidney

D.) Liver

E.) Lungs - ✔✔✔ Correct Answer > C.) Kidney



Midstream urine samples are most often used for:

A.) "Mono" testing

B.) Bence-Jones protein

C.) Culture and sensitivity

D.) Pregnancy testing

E.) Routine analysis - ✔✔✔ Correct Answer > C.) Culture and sensitivity



PKU tests are performed routinely on:

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,A.) HIV patients

B.) Cancer patients

C.) Elderly patients

D.) New employees

E.) Newborn infants - ✔✔✔ Correct Answer > E.) Newborn infants

*PKU = Phenylktonuria



What is leukopenia?

A.) A disease where leukocytes are too big

B.) A disease where leukocytes are too small

C.) A high leukocyte count

D.) A low leukocyte count

E.) A normal leukocytes count - ✔✔✔ Correct Answer > D.) A low
leukocyte count



Specimens for C&S should be obtained before the patient:

A.) Has breakfast



B.) Is given anti-coagulants

C.) Is given anti-microbial agents

D.) Is given any "dye" injections



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,E.) Is given diuretics - ✔✔✔ Correct Answer > C.) Is given antimicrobial
agents



Clean-catch urine specimens are necessary when testing urine for:

A.) Bacteria

B.) Bilirubin

C.) Glucose

D.) Occult blood

E.) Protein - ✔✔✔ Correct Answer > A.) Bacteria



Which of these tests does NOT require a 24-hour urine specimen?

A.) Catecholamines

B.) Creatinine clearance

C.) Ketones

D.) Ketosteroids

E.) Quantitative drug analysis - ✔✔✔ Correct Answer > C.) Ketones What is
a buffy coat?

A.) A layer of cells that appears when whole anticoagulated blood is
centrifuged

B.) A layer of cells that appears when whole coagulated blood is centrifuged

C.) The cell membrane of a while blood cell

D.) The lay of buffer that appears when an SST tube is centrifuged


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, E.) The liquid part of blood - ✔✔✔ Correct Answer > A.) A layer of cells
that appears when whole anticoagulated blood is centrifuged



A reticulocyte is:

A.) A mature red blood cell

B.) An immature erythrocyte

C.) Demonstrated using a Wright-Giemsa stain

D.) Found only in the bone marrow

E.) Part of the reticuloendothelial system - ✔✔✔ Correct Answer >

B.) An immature erythrocyte



Which of these antibodies is most likely to be found on a B cell?

A.) IgA

B.) IgD

C.) IgE

D.) IgG

E.) IgM - ✔✔✔ Correct Answer > B.) IgD



Which of these actions would help to prevent hemoconcentration during
venipuncture?

A.) Asking the patient to make and release a fist several times

B.) Asking the patient to release her fist upon blood flow

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