Chemistry And Serology Competency_weeks_2012

Explanation
After obtaining a critical value result, the first action step is to repeat the test to verify the critical value. This is important because critical values are often associated with potentially life-threatening conditions or situations that require immediate attention. By repeating the test, it helps to ensure that the result is accurate and not due to any error or anomaly. It also provides an opportunity to confirm the critical value and take appropriate actions promptly, such as notifying the physician and initiating necessary interventions.

Explanation
The "Triage Meter" BNP tests for Brain Natriuretic peptides using the Fluorescence Immunoassay methodology. This method involves the use of fluorescent labels to detect and measure the presence of specific antigens or antibodies in a sample. It is a highly sensitive and accurate technique that allows for the quantitative measurement of BNP levels in patient samples.

Explanation
The correct answer is EDTA whole blood or plasma. This means that the specimen requirement for running the Triage D-dimer test is either EDTA whole blood or plasma.

Explanation
The "Profile-V MedTox Scan Drugs of Abuse" test system uses the immunochromatographic assay methodology to screen for drugs. This methodology involves the use of specific antibodies that are immobilized on a membrane. When a sample is applied to the membrane, any drugs present in the sample will bind to the antibodies. The membrane is then washed to remove any unbound substances. Finally, a colored indicator is added, which will bind to any drug-antibody complexes present on the membrane. The presence of a colored line indicates a positive result for that particular drug. This assay is commonly used for rapid and qualitative drug screening.

Explanation
The statement says that a blue line at the corresponding test position on the MedTox test strip indicates a positive test result. However, the correct answer is false. This means that a blue line at the corresponding test position does not indicate a positive test result.

Explanation
Lipoclear is used to clear lipemic samples, which means it removes lipids from the sample. Lipids can interfere with certain tests, so Lipoclear is helpful in those cases. Cholesterol and triglyceride tests are specifically mentioned as being affected by lipemia, so they cannot be performed after treatment with Lipoclear. The other tests (BUN, glucose, and creatinine) are not mentioned as being affected by lipemia, so they can still be performed after treatment with Lipoclear.

Explanation
A grossly hemolyzed serum sample is not acceptable for use when testing for HCG with the Sure-Vue Serum/Urine HCG test kit. Hemolysis refers to the rupture or destruction of red blood cells, which can release substances that may interfere with the accuracy of the test results. Therefore, it is important to use a non-hemolyzed serum sample for HCG testing to ensure reliable and accurate results.

Explanation
The correct answer is Nasopharyngeal swab and Nasal aspirate/wash. These specimens are the specimens of choice for optimal performance when using the BinaxNOW Influenza A & B test. The test is designed to detect the presence of influenza A and B viruses in these specific samples. Stool sample and whole blood are not recommended specimens for this particular test.

Explanation
The statement is true because a negative test result using the BinaxNow Influenza A & B test kit does not guarantee that a person is not infected with influenza A and B. False negatives can occur due to various reasons such as the sensitivity of the test, timing of the test, or the presence of a different strain of the virus that the test may not detect. Therefore, it is possible for a person to have influenza A or B despite getting a negative result from this particular test.

Explanation
The explanation for the given answer "False" is that the "Sure-Vue RF" latex test is actually used for the qualitative determination of Rheumatoid factor in serum, not the quantitative determination. It works by detecting the presence or absence of Rheumatoid factor through the agglutination of latex particles on a slide. Therefore, the statement in the question is incorrect.