Which One of the Following Specimen Types and Collection Methods

question 22

Multiple Choice

Which one of the following specimen types and collection methods is best for laboratory assessment of brain natriuretic peptide (BNP) in the evaluation of congestive heart failure?

• A) Serum in glass blood collection tubes only
• B) EDTA-anticoagulated whole blood or plasma in plastic blood collection tubes only
• C) Heparinized plasma in any type of blood collection tube
• D) Urine in sterile collection container for analysis of BNP metabolites only

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