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Updated: Aug 11, 2026
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Characterization of Thymus-dependent and Thymus-independent Immunoglobulin Isotype Responses in Mice Using Enzyme-linked Immunosorbent Assay
Published on: September 7, 2018
[Immunoenzymatic method for determining thyroglobulin levels in human blood serum]
1Zakład Biochemii, Centrum Medyczne Kształcenia Podyplomowego w warszawie.
Endokrynologia Polska
|January 1, 1991
Summary
A new, inexpensive enzyme immunoassay accurately measures thyroglobulin (Tg) in human serum. This method is valuable for monitoring differentiated thyroid cancer patients post-surgery, aiding early metastasis detection.
Area of Science:
- Biochemistry
- Immunology
- Clinical Chemistry
Context:
- Thyroglobulin (Tg) is a key biomarker in differentiated thyroid cancer (DTC) management.
- Accurate and accessible Tg measurement is crucial for post-surgical monitoring.
- Existing methods may have limitations in cost or accessibility.
Purpose:
- To develop and validate an inexpensive enzyme immunoassay (EIA) for human serum thyroglobulin determination.
- To assess the performance characteristics of the developed EIA method.
- To evaluate its potential utility in clinical settings, particularly for DTC patient monitoring.
Summary:
- An economical EIA was developed for serum Tg, measuring concentrations from 6-800 ng/ml with sensitivity comparable to commercial kits.
- The method demonstrated strong correlation (r=0.946) with a reference IRMA method, showing acceptable intra-assay (5.5-10.2%) and inter-assay (9.5-13.2%) variability.
- The upper limit for healthy subjects was determined as 70 ng/ml, with a note on potential interference from antithyroglobulin antibodies.
Impact:
- Provides a cost-effective alternative for routine thyroglobulin testing.
- Facilitates early detection of recurrence or metastasis in differentiated thyroid cancer patients.
- Highlights the necessity of simultaneous antithyroglobulin antibody testing to avoid falsely lowered Tg results.
