Which of the following best describes a procedural difference between homogeneous and heterogeneous immunoassays?
A. There is no physical separation of bound from free fractions in a homogeneous immunoassay, whereas in a heterogeneous immunoassay you must separate bound forms from free forms.
B. A homogeneous immunoassay usually takes longer to perform because you must physically separate the bound from free fractions, whereas in a heterogeneous immunoassay the time to perform the assay is shorter because you do not have to separate the bound forms from free forms.
C. There is a physical separation of bound from free fractions in a homogeneous immunoassay.
D. Separation of bound and free fractions is optional for either type of immunoassays.
A
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