30 Questions
What is the origin of the word 'clinical'?
From the Greek word 'kline' meaning bed
What is the primary purpose of clinical chemistry?
To study the levels of various body constituents during health and disease
What type of specimens are typically analyzed in clinical chemistry?
Blood samples, urine, and other body fluids
What is the role of clinical chemistry in medicine?
To diagnose disease, institute treatment, and follow the disease's progress
What is clinical chemistry as a service?
A laboratory that produces objective evidence
What is the link between clinical chemistry and other sciences?
It links with general chemistry, organic chemistry, and biochemistry
What is a primary source of errors during the preexamination stage of laboratory testing?
Blood collection
What is a critical responsibility of phlebotomists during the preexamination stage?
Recognizing and reporting critical variables affecting sample quality
Which of the following patient-related factors can affect the quality of a blood sample?
All of the above
What type of variables can affect normal values for test results?
Physiological variables
Who is primarily responsible for controlling errors during the preexamination stage?
Phlebotomist
Why is it important for phlebotomists to be aware of patient conditions and complications during blood collection?
To recognize potential sample quality issues
What happens to the volume ratio of plasma to red blood cells when the serum or plasma is removed from the tube?
It is altered
What can cause substances to be centrifuged into the serum or plasma, altering test results?
Blood clotting
What is the purpose of a test requisition form?
To identify the patient and provide necessary information to the phlebotomist
Why should a phlebotomist not collect a sample without a requisition form?
It is essential for legal protection and providing necessary information
How may a healthcare provider request a lab test?
All of the above
What happens to the requisition form after it is generated by the healthcare provider?
It accompanies the sample to the laboratory
What is the primary use of a Thyroid Panel in clinical chemistry?
To check for Hyperthyroidism and Hypothyroidism
What is the purpose of a Cardiac Panel in clinical chemistry?
To diagnose and monitor cardiac diseases
What is a common reason for specimen rejection in clinical chemistry?
Incorrect labeling of specimen
What is the importance of transporting samples to the laboratory?
To follow procedures for samples requiring special handling
What is included in a Lipid Profile?
Total Cholesterol, High Density Lipoprotein, Low Density Lipoprotein, Triglycerides
What is the purpose of measuring Non-Protein Nitrogenous Compounds in clinical chemistry?
To evaluate kidney function
What type of tubes are used to collect serum for clinical chemistry tests?
Tubes with gel barriers
Why is it important to allow samples to clot fully before centrifugation?
To ensure complete separation of cells and serum
What is the primary purpose of using centrifugation in the laboratory?
To separate the cells from the serum or plasma
What is the relative centrifugal force (RCF) of a centrifuge dependent on?
The radius of the rotor head and the speed of rotation
At what gravity (g) are most laboratory samples typically centrifuged?
850 to 1000 g
Why is it important to follow proper centrifugation procedures?
To prevent injury from improper use
Learn about the basics of clinical chemistry, its definition, and its significance in studying human health and disease. Explore the role of chemistry in analyzing body fluids and tissues. Get introduced to the exciting world of clinical chemistry!
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