> ## Documentation Index
> Fetch the complete documentation index at: https://markers.iollo.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Thyroglobulin Antibodies (TgAb)

Thyroglobulin Antibodies (TgAb) are antibodies that can be present in autoimmune thyroid conditions such as Hashimoto's thyroiditis. The presence of TgAb can help diagnose these conditions.

## iollo markers that associate with Thyroglobulin Antibodies (TgAb)

### Phenylalanine

Phenylalanine is another amino acid component of thyroglobulin. Abnormal phenylalanine levels could indicate impaired thyroglobulin synthesis or degradation related to TgAb.

<Accordion title="References">
  ScienceDirect Topics. Thyroglobulin - an overview. *ScienceDirect Topics* (-). [https://www.sciencedirect.com/topics/biochemistry-genetics-and-molecular-biology/thyroglobulin](https://www.sciencedirect.com/topics/biochemistry-genetics-and-molecular-biology/thyroglobulin)

  Li, Wei PhD; Sun, Danyang; Ming, Hui; Zhang, Guizhi; Tan, Jian MD. A rare case report of very low thyroglobulin and a negative.... *MD Journal* (2017). [https://journals.lww.com/md-journal/fulltext/2017/02170/a\_rare\_case\_report\_of\_very\_low\_thyroglobulin\_and\_a.21.aspx](https://journals.lww.com/md-journal/fulltext/2017/02170/a_rare_case_report_of_very_low_thyroglobulin_and_a.21.aspx)

  -. The Usefulness of Thyroid Antibodies in the Diagnostic Approach .... *NCBI* (2023). [https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10366745/](https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10366745/)

  ScienceDirect Topics. Thyroglobulin - an overview. *ScienceDirect Topics* (-). [https://www.sciencedirect.com/topics/neuroscience/thyroglobulin](https://www.sciencedirect.com/topics/neuroscience/thyroglobulin)

  Prpić, Marin; Franceschi, Maja; Romić, Matija; Jukić, Tomislav; Kusić, Zvonko. THYROGLOBULIN AS A TUMOR MARKER IN DIFFERENTIATED .... *-* (-). [https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6536288/](https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6536288/)
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### Tyrosine

Tyrosine is a key component of thyroglobulin, the protein targeted by TgAb in autoimmune thyroid disorders like Hashimoto's thyroiditis. Altered tyrosine levels may reflect disrupted thyroglobulin metabolism.

<Accordion title="References">
  Eleonore Fröhlich, Richard Wahl. Thyroid Autoimmunity: Role of Anti-thyroid Antibodies in Thyroid and Extra-Thyroidal Diseases. (2017). [https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5422478/](https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5422478/)

  MedlinePlus Medical Test. Thyroid Antibodies. (2023). [https://medlineplus.gov/lab-tests/thyroid-antibodies/](https://medlineplus.gov/lab-tests/thyroid-antibodies/)

  Autoimmune Thyroid Disorders. *PMC - NCBI* (2013). [https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3710642/](https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3710642/)
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