In Your Clinical Chemistry Laboratory,you Use an Immunoassay to Detect

question 16

Multiple Choice

In your clinical chemistry laboratory,you use an immunoassay to detect blood levels of NT-proBNP.You receive a filled green-top anticoagulant-containing plastic blood collection tube with a request for NT-proBNP.What is your next step?

• A) Because this is an incorrect specimen type,contact the physician/nurse immediately and request a serum specimen.
• B) Proceed,because this tube contains heparin and provides plasma after centrifugation,which is acceptable for the NT-proBNP assay.
• C) Proceed,because this tube will provide serum after centrifugation,which is acceptable for the NT-proBNP assay.
• D) Because only whole blood is acceptable,go ahead and run the test on the green-top tube.

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Definitions:

Degrees of Freedom

The measure of unique values or quantities that can be set for a statistical distribution.

DfWG

Degree of Freedom Within Groups, which quantifies the variability of observations within individual groups in an ANOVA test.

One-way ANOVA

A statistical test utilized to compare the means of three or more independent groups to determine if there is a significant difference among them.

F-ratio

A statistic commonly used in ANOVA (Analysis of Variance) to compare the variances between groups to see if there is a significant difference between them.