| 摘要 |
Immunoassay for a tumour marker protein (I) in a biological fluid sample, where the sample may contain other proteins or peptides that might produce a systematic error in the test result, comprises reacting (I) with an immunological binding partner of (I) in a test soln., obtaining a test result, and evaluating the result using standard curves established with the aid of standard solns. and a blank standard. The improvement comprises adding a fixed amt. of (I) to the test soln. and to the standard solns. and blank standard before performing the assay and before establishing the standard curves. The test results are evaluated as follows: a result above that of the blank is counted as a positive result, below the blank is indicative of a systematic error. Also claimed are: (1) a kit for performing an assay as above, comprising a tracer soln. standard solns. a blank standard, a wash liq., and a test tube contg. an immobilised immunological binding partner of (I) and a fixed amt. of (I) and (2) a test tube for performing an immunoassay for thyroglobulin (Tg) in a biological fluid sample, where an anti-Tg antibody is immobilised on the wall of the tube and the wall is also coated with a fixed amt. of Tg. |
