FREE MLPAO Laboratory Techniques and Procedures Questions and Answers
Which of the following is a transfusion science test?
DAT stands for Direct Antiglobulin Test. It is a laboratory test used in transfusion science to detect antibodies or complement proteins that are bound to the surface of red blood cells. This test is crucial for detecting autoimmune hemolytic anemia and for investigating hemolytic disease of the newborn (HDN). The other options listed (AFP, NH4, retic, and CRP) are not specifically transfusion science tests; they relate to different aspects of laboratory testing or biological markers.
Which of the following items is NOT found in cryoprecipitate?
Cryoprecipitate is a blood product derived from plasma that contains high concentrations of fibrinogen, Factor VIII, Factor XIII, and von Willebrand factor. Factor I in this context refers to fibrinogen. Factors VIII and XIII are crucial components found in cryoprecipitate. However, Factor V (also known as labile factor or proaccelerin) is not typically found in cryoprecipitate. Therefore, option b) is correct because Factor V is not a component of cryoprecipitate.
A fecal sample for culture and sensitivity is collected:
When collecting a fecal sample for culture and sensitivity, it is essential to use an aseptic technique to prevent contamination of the sample. The aseptic technique involves methods to avoid introducing microorganisms from the environment into the sample or causing contamination from other sources.
What is the function of the gel separator in an evacuated blood collection tube?
The gel separator in an evacuated blood collection tube separates red blood cells (RBCs) and white blood cells (WBCs) from both plasma and serum after centrifugation. This ensures that these cells are separated from the liquid components (plasma and serum) of the blood sample.
The laboratory rejects a specimen for INR testing because the specimen is in an evacuated tube with a light blue top and the specimen is:
For INR (International Normalized Ratio) testing, it's crucial that the specimen reaches the laboratory within a specified time frame to ensure accurate results. Delays in transit, especially for extended periods like 6 hours, can lead to changes in the sample that affect the reliability of the INR measurement. Therefore, if a specimen intended for INR testing is delayed in transit for too long, it may need to be rejected to ensure the validity and accuracy of the test results.
A physician in the ER performs a lumbar puncture on a patient. Which of the following tests are likely to be ordered?
After a lumbar puncture, these tests are performed on the cerebrospinal fluid (CSF) to check for infection, inflammation, and other conditions affecting the central nervous system.
An electrocardiogram is accurately described as a test that:
An electrocardiogram (ECG or EKG) is a diagnostic test that records the electrical activity of the heart over a period of time using electrodes placed on the skin. It provides information about the heart's rhythm, rate, and any abnormalities in the electrical conduction system of the heart.