What Does It Mean That an Assay Is Said to Be

Multiple Choice

What does it mean that an assay is said to be "linear"?

A) The final result for a given analyte is directly proportional to the analyte's true measure in the specimen.
B) The lowest and highest results for an assay are accurate when compared to known standards.
C) The reference range for an assay provides true positive results for greater than 98% of patients.
D) There is no interfering substance obscuring the results.