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A(n) ________ consists of a sample of respondents, generally households that have agreed to provide information over an extended period.
Antibody tests
Blood tests that look for antibodies in your blood to determine past exposure to certain infections or diseases or to assess your immune system's response to vaccination.
Collection tube
A tube used in medical and clinical settings for the collection of blood or other specimens from patients for analysis.
Gray stopper
A type of closure used in medical vials or tubes, often indicating specific properties or tests associated with the sample container.
Blood collection tube
A sterile glass or plastic tube with a closure that is evacuated to create a vacuum enabling the draw of a predetermined volume of blood for testing.
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