Quiz
Biochem Topic 1 (1-36)
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Questions in this quiz (36)
11.1. Select the investigations that are included in the spectrum of clinical laboratory diagnosis:
- Aa) electrocardiographic
- Bb) biochemical
- Cc) ultrasonographic
- Dd) radiological
- Ee) angiographic
21.2. Select the investigations that are included in the spectrum of clinical laboratory diagnosis:
- Aa) electrocardiographic
- Bb) immunological
- Cc) ultrasonographic
- Dd) radiological
- Ee) angiographic
31.3. Select the investigations that are included in the spectrum of clinical laboratory diagnosis:
- Aa) electrocardiographic
- Bb) molecular-biological
- Cc) ultrasonographic
- Dd) radiological
- Ee) angiographic
41.4. For what purpose are laboratory analyzes indicated?
- Aa) to exclude the collection of anamnesis
- Bb) to establish the disease from which the sick person suffers
- Cc) to establish the presence of risk factors in healthy people
- Dd) to establish the prognosis of the disease
- Ee) to concretize the clinical picture
51.5. What can be determined when using laboratory methods for diagnostic purposes?
- Aa) the affected organ/tissue
- Bb) the geographical area of origin of the patient
- Cc) the clinical picture
- Dd) the exact moment of the onset of the disease
- Ee) how long the illness will last
61.6. What can be determined when using laboratory methods for diagnostic purposes?
- Aa) the geographical area of origin of the patient
- Bb)degree of impairment (insignificant, moderate, severe)
- Cc) assessment of the clinical picture
- Dd) the exact moment of the onset of the disease
- Ee) how long the illness will last
71.7. What is the usefulness of biochemical laboratory methods in monitoring
treatment?- Aa) allows establishing the etiology of the disease
- Bb) contributes to the evaluation of the effectiveness of the treatment
- Cc) can help in determining the exact moment of initiation of treatment
- Dd) facilitates the identification of adverse drug reactions
- Ee) helps in ascertaining the achievement of the therapeutic target
81.8. What is the usefulness of biochemical laboratory methods in monitoring
treatment?- Aa) allows the calculation of the incidence and prevalence of the disease
- Bb) contributes to establishing the patient's prognosis
- Cc) reveals the dynamics of the pathological process in the organ (for better or worse)
- Dd) helps to identify the causative agent of the disease
- Ee) helps prevent the development of critical conditions
91.9. Select the non-modifiable factor associated with the patient that may influence the results
laboratory analyses:- Aa) age
- Bb) physical activity
- Cc) occupational harm
- Dd) medication
- Ee) eating habits
101.10. Select the non-modifiable factor associated with the patient that may influence the results
laboratory analyses:- Aa) smoking
- Bb) gender
- Cc) physical activity
- Dd) medication
- Ee) eating habits
111.11. Select the non-modifiable factor associated with the patient that may influence the results
laboratory analyses:- Aa) smoking
- Bb) biorhythms (diurnal, seasonal, etc.)
- Cc) physical activity
- Dd) medication
- Ee) eating habits
121.12. Select the responsibilities of the clinician at the pre-analytical stage of laboratory biochemical diagnosis that ensures the quality of the analysis results:
- Aa) analysis of the epidemiological situation in the region
- Bb) identifying the spectrum of investigations necessary to establish the correct diagnosis
- Cc) requesting laboratory analyses
- Dd) exhaustive information regarding the preparation for the collection of biological material
- Ee) obtaining the informed consent of the patient for the laboratory investigation
131.13. What data must be included in the laboratory biochemical analysis request
form?- Aa) the name, surname, gender and year of birth of the patient
- Bb) the date and time of the patient's admission for hospitalized patients
- Cc) the ward where the patient is hospitalized and the name of the attending physician
for hospitalized patients - Dd) home address, mobile phone number and email address of the attending physician
- Ee) the date on which the results of the analyzes must be delivered
141.14. What activities must be carried out by the laboratory doctor/specialist with secondary education at the
pre-analytical stage of the laboratory diagnosis?- Aa) completing the referral form for the laboratory investigation
- Bb) establishing the list of laboratory analyzes to be performed
- Cc) training the patient regarding the preparation for sampling the biological material
- Dd) correct identification of the patient
- Ee) the appropriate completion of the documents for sampling the biological material
151.15. What activities must be performed by the laboratory doctor at the pre-analytical stage a
laboratory diagnosis?- Aa) establishing the history of the disease
- Bb) physical examination of the patient
- Cc) obtaining the patient's informed consent for the sampling of biological material
- Dd) informing the patient about the technique of performing the laboratory analysis
- Ee) correct storage of the collected biological material
161.16. What activities must be performed by the laboratory doctor at the pre-analytical stage a
laboratory diagnosis?- Aa) establishing the history of the disease
- Bb) physical examination of the patient
- Cc) informing the patient about the method of collecting the biological material, if possible
complications of taking biological material and how to prevent it - Dd) informing the patient about the technique of performing the laboratory analysis
- Ee) correct storage of the collected biological material
171.17. What activities must be performed by the laboratory doctor at the pre-analytical stage a
laboratory diagnosis?- Aa) establishing the history of the disease
- Bb) physical examination of the patient
- Cc) informing the patient about the technique of performing the laboratory analysis
- Dd) the appropriate sampling of the biological material, respecting the rules of aseptic and
antiseptics - Ee) correct storage of the collected biological material
181.18. Select mistakes in patient preparation for laboratory investigation:
- Aa) the patient was prescribed a restrictive diet prior to the sampling of the material
biological - Bb) the patient was recommended increased physical activity prior to the sampling of the material
biological - Cc) the patient's medication must be stopped
- Dd) the doctor did not inform the patient about the procedure for processing, storing and transporting the
biological material - Ee) the patient was not informed about the content of the laboratory analysis request
form
- Aa) the patient was prescribed a restrictive diet prior to the sampling of the material
191.19. Select typical mistakes in the blood sampling procedure:
- Aa) tourniquet application
- Bb) the sitting position of the patient during collection
- Cc) using the test tube that does not correspond to the requested analysis
- Dd) sampling from the pre-infusion system without its prior processing
- Ee) vigorous shaking of the test tube in order to mix the blood with the environment
201.20. Select the factors that can influence the quality of the collected biological material:
- Aa) hemolysis and metabolism of erythrocytes
- Bb) chemical reactions in tissues
- Cc) the action of microorganisms
- Dd) the action of darkness
- Ee) the febrile state of the patient
211.21. Select the factors that can influence the quality of the collected biological material:
- Aa) water evaporation and/or osmotic processes
- Bb) the use of colored containers
- Cc) the action of light
- Dd) keeping in sterile containers
- Ee) storage in tightly closed containers
221.22. Select errors specific to the pre-analytical stage:
- Aa) incorrect and/or incomplete completion of the patient's data in the analysis sheet and the term sampling (date and time)
- Bb) signing the informed consent by the patient/guardian
- Cc) including the identification data of the doctor who requested the laboratory analysis in the results bulletin
- Dd) using the non-sterile container for collection
- Ee) wrong collection technique (applying the tourniquet, patient's posture, etc.)
231.23. What activities are specific to the analytical stage of laboratory diagnosis?
- Aa) obtaining the patient's informed consent
- Bb) sampling of biological material
- Cc) transportation and storage of biological material
- Dd) informing the patient about the measurement technique
- Ee) measuring the analyte in the biological material
241.24. What activities are specific to the analytical stage of laboratory diagnosis?
- Aa) obtaining the patient's informed consent
- Bb) sampling of biological material
- Cc) transportation and storage of biological material
- Dd) informing the patient about the measurement technique
- Ee) completing the results report
251.25. Why would the laboratory have the right to reject the biological sample?
- Aa) the biological material was not collected in the laboratory
- Bb) the biological material was collected in a container that does not correspond to the requested analysis
- Cc) an excessive amount of biological material was collected
- Dd) blood was collected without tourniquet application
- Ee) urine collected for 24 hours was kept in the refrigerator
261.26. What are the actions that can be taken by the laboratory in case of insufficient amount of
biological material?- Aa) rejection of the sample and the request for analyses
- Bb) accepting the sample and performing the analyzes for which the biological material arrives in the sequence in the request form
- Cc) accepting the sample and performing some analyzes from the request form after the discussion with
the attending physician - Dd) accepting the sample and adapting the dosing methods to the small volume of the biological material
- Ee) additional collection of biological material and mixing it with the already existing one
271.27. Why does hemolysis have a negative impact on the results of blood laboratory
tests?- Aa) the specific color of the hemolyzed serum will interfere with the color of the analysis solution in the case
the application of spectrophotometric methods - Bb) hemolysis will decrease the ability of the machine to measure the color intensity of the analyzed solution
- Cc) hemoglobin will bind serum proteins and will not allow their correct dosing
- Dd) the destruction of erythrocytes causes an increase in plasma lipids at the expense of
membrane lipids - Ee) hemolysis is accompanied by the consumption and decrease in the level of potassium, magnesium, iron
- Aa) the specific color of the hemolyzed serum will interfere with the color of the analysis solution in the case
281.28. What is one of the most common causes of errors associated with performing the analysis of
laboratory?- Aa) inappropriate biological material is used (hemolyzed, lactescent, kept beyond the deadline accepted and/or under improper conditions, etc.)
- Bb) the biological material was not sterilized prior to performing the analysis
- Cc) standardized reagents were used
- Dd) positive control samples were performed in each series of analyses
- Ee) negative control samples were performed in each series of analyses
291.29. What are the causes of the most common errors associated with performing laboratory analysis?
- Aa) the biological material was contaminated biologically, chemically or microbiologically
- Bb) the reagents used do not meet the quality requirements (expire, insufficient purity, storage
inappropriate etc.) - Cc) the technique of performing the analysis was not respected (the sequence of adding the reagents, the quantity
wrong reagents, incubation time and conditions, measurement, etc.) - Dd) the sequence of performing the analyzes in accordance with the request bulletin was not respected
- Ee) the attending physician was not consulted regarding the patient's medication
301.30. What mistakes are associated with the analytical stage of laboratory diagnosis?
- Aa) use of standardized equipment
- Bb) the use of inappropriate calibrators
- Cc) the exaggerated number of repetitions of the test
- Dd) lack of the procedure for validating the results or non-compliant validation
- Ee) results report with incomplete data
311.31. What a factorNOT does it influence the quality of reagents prepared "in house" (in the laboratory that
performs the analysis)?- Aa) the quality of solvents (including water) used for preparation,
- Bb) the correct selection of glass or plastic items used to prepare and store the
reagent, - Cc) calibration and standardization of scales used for weighing, as well as pipettes/vessels for
measuring volumes of liquid reagents - Dd) the use of automatic devices that ensure the necessary temperature in the preparation process
- Ee) keeping chemicals in the dark
321.32. What activities is the laboratory obliged to undertake in the field of standardization of
laboratory equipment?- Aa) upon completion of use, check the performance of the equipment
- Bb) draw up instructions for use for each piece of equipment used
- Cc) obliged to have trained and authorized engineers in the states
- Dd) to document how to maintain and check the condition of the equipment (calibration)
- Ee) to have the documented procedure for equipment calibration
331.33. Sensitivity and specificity of laboratory tests - select the correct answers:
- Aa) are indicators of the accuracy of a test
- Bb) reveals the ability of a test to differentiate between the presence and absence of the disease at a value selected result limit
- Cc) are fixed characteristics of a test
- Dd) is calculated for each limit value chosen
- Ee) the limit value is represented by the minimum reference value
341.34. Reference values/intervals – select the true statements:
- Aa) include minimum and maximum admissible values of a test that allow to differentiate between health and disease
- Bb) the range of values in which 95% of the results of healthy (“normal”) individuals are included
- Cc) 5% of people who are not sick will have laboratory results below the reference range
- Dd) 5% of healthy individuals will have laboratory results above the reference range
- Ee) all healthy individuals will be included in the reference interval
351.35. What factors will determine errors of the clinician's decision at the post-analytical stage
of the laboratory diagnosis?- Aa) the report with the results of the analysis contains excessive and unnecessary information (the sample used and
its condition, the method, the reference values, the comments of the laboratory doctor, etc.) - Bb) the doctor does not know the specificity and sensitivity of the method
- Cc) the doctor does not know the interference factors of the laboratory analysis
- Dd) the doctor was not informed by the laboratory about the detection of the critical values of the indices
dispensers - Ee) the results were released to the patient and presented to the doctor late for collection
decisions
- Aa) the report with the results of the analysis contains excessive and unnecessary information (the sample used and
361.36. What physiological factors should be considered when evaluating the results of
laboratory tests?- Aa) age and gender of the patient
- Bb) professional activity
- Cc) circadian rhythms
- Dd) the severity of the disease
- Ee) disease stage (acuteness/remission)
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- Quiz on Biochem Topic 1 (1-36), created by ppppp oooo on 14/03/2026.
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