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# Thyroid disease - Whole blood and components

## Essential information

Obligatory

  Must not donate if:

  1. Under investigation.
  2. Malignant.
  3. Less than 6 months from treatment with radioactive iodine therapy.
  4. Less than 24 months from stopping treatment with anti-thyroid tablets.
  5. Less than 8 weeks since commencing thyroid replacement therapy (thyroxine).
Discretionary

  If on stable maintenance thyroid replacement therapy (thyroxine), and there have been no dose changes in the last 4 weeks, accept.

## Supporting information

See if relevant
  - Autoimmune disease
  - Malignancy
  - Surgery
Additional information

  An overactive or underactive thyroid increases the risk of heart disease.

  Treatments used to treat an overactive thyroid are potentially harmful to the unborn child of a transfused mother.

Reason for change:
  The acceptance criteria for donors on long term thyroxine has been reviewed.
Version details:

  WB-DSG Edition 203 Release 39 (26 September 2017)

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