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Prealbumin
Also known as: PA, Tryptophan-rich prealbumin, Thyroxine-binding prealbumin, TBPA Formal name: Transthyretin test Related tests: Albumin
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The Test Sample
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What is being tested?The test measures levels of prealbumin, an important protein found in the blood serum. Prealbumin has a half-life of only two days, which means that it breaks down quickly in the body and the amount changes quickly. This short half-life helps doctors to get a more immediate picture of your nutrition.
How is the sample collected for testing?
A blood sample is taken by a needle from a vein in the arm.
NOTE: If undergoing medical tests makes you or someone you care for anxious, embarrassed, or even difficult to manage, you might consider reading one or more of the following articles: Coping with Test Pain, Discomfort, and Anxiety, Tips on Blood Testing, Tips to Help Children through Their Medical Tests, and Tips to Help the Elderly through Their Medical Tests.
Another article, Follow That Sample, provides a glimpse at the collection and processing of a blood sample and throat culture.
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This article was last reviewed on
February 23, 2006.
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