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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Definitions:

Increased Precipitation

A rise in the amount of rainfall and snowfall over a certain period and area, typically associated with climatic changes.

Thermal Contraction

The decrease in a material's volume in response to a decrease in temperature.

Plant Species

A category that ranks below genus and denotes a group of plants that share certain characteristics and are capable of interbreeding to produce fertile offspring.

Endangered Species

Species that are at risk of extinction due to a dramatic decline in their population or habitat.