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Published on: March 23, 2018
A high-sensitivity enzyme-linked immunosorbent assay for serum thyroglobulin
G Wunderlich1, K Zöphel, L Crook
1Department of Nuclear Medicine, Carl Gustav Carus Medical School, University of Technology, Dresden, Germany. wunderlich@mailbox.ku.dresden.de
Thyroid : Official Journal of the American Thyroid Association
|September 29, 2001
Summary
A new enzyme-linked immunosorbent assay (ELISA) offers sensitive measurement of serum thyroglobulin (Tg), improving detection of differentiated thyroid cancer (DTC) recurrence. This assay provides earlier and more reliable monitoring for treated DTC patients compared to traditional methods.
Area of Science:
- Endocrinology
- Oncology
- Biochemistry
Background:
- Thyroglobulin (Tg) is a key biomarker for differentiated thyroid cancer (DTC).
- Current immunoradiometric assays (IRMA) have limitations in sensitivity for monitoring treated DTC patients.
- Improved methods for serum Tg measurement are needed for earlier detection of recurrence.
Purpose of the Study:
- To describe a sensitive enzyme-linked immunosorbent assay (ELISA) for serum thyroglobulin (Tg) measurement.
- To evaluate the performance of the ELISA compared to Tg immunoradiometric assay (IRMA).
- To assess the utility of the ELISA for monitoring patients with treated differentiated thyroid cancer (DTC).
Main Methods:
- Development and validation of a novel enzyme-linked immunosorbent assay (ELISA) for serum Tg.
- Comparison of ELISA results with Tg immunoradiometric assay (IRMA) in healthy donors and DTC patients.
- Assessment of assay reliability in the presence of thyroglobulin autoantibodies.
Main Results:
- The ELISA demonstrated high sensitivity (0.03 ng/mL) and excellent agreement with IRMA (r = 0.99-0.98).
- The ELISA successfully measured Tg in 76% of treated DTC patients negative for autoantibodies, compared to only 5% by IRMA.
- Tg measurements by ELISA may be less reliable in the presence of Tg autoantibodies.
Conclusions:
- The developed ELISA is a sensitive and reliable tool for measuring serum Tg in treated DTC patients.
- This assay facilitates earlier detection of recurrence by measuring lower Tg levels than IRMA.
- The ELISA holds significant potential for improved patient care and monitoring of differentiated thyroid cancer.
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