Which Assay of Antithrombin (AT-III) Involves Measurement of the Diameter

question 33

Multiple Choice

Which assay of antithrombin (AT-III) involves measurement of the diameter of the precipitate circles from plasma diffused into antibody-containing agarose gel to determine the percent of antithrombin?

• A) Chromogenic substrate assay
• B) Laurell-rocket electroimmunoassay
• C) Radial immunodiffusion
• D) Clotting time based on thrombin neutralization
• E) None of the above

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