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[CA 19-9 enzyme immunoassay].

H Ota, H Odani, H Watanabe

Gan No Rinsho. Japan Journal of Cancer Clinics

|August 1, 1986

Summary

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The FUJIREVIO INC carbohydrate antigenic determinant (CA 19-9) EIA kit demonstrates excellent reproducibility and accuracy for cancer biomarker detection. This enzyme immunoassay (EIA) offers a reliable alternative to radioimmunoassay (RIA) for clinical use.

Area of Science:

Biochemistry
Clinical Chemistry
Immunology

Context:

The carbohydrate antigenic determinant (CA 19-9) is a tumor-associated antigen.
Accurate measurement of CA 19-9 is crucial for cancer monitoring.
Enzyme immunoassay (EIA) and radioimmunoassay (RIA) are common detection methods.

Purpose:

To evaluate the performance of the FUJIREVIO INC CA 19-9 EIA kit.
To compare the EIA method with the established RIA method.
To assess the clinical utility of the CA 19-9 EIA kit in cancer and benign disease patients.

Summary:

The CA 19-9 EIA kit exhibited good linearity (up to 240 U/ml) and excellent intra- and interassay reproducibility in basic studies.
Serum CA 19-9 levels measured by EIA showed excellent correlation with RIA results.

Related Experiment Videos

While EIA had slightly more false positives in benign diseases, its overall accuracy, reproducibility, and simplicity make it a valuable assay.

Impact:

The CA 19-9 EIA kit provides a simple, reproducible, and accurate method for CA 19-9 measurement.
This assay is a useful tool for clinical applications in oncology.
The findings support the adoption of EIA as a viable alternative to RIA for CA 19-9 detection.