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# Klinefelter syndrome - Whole blood and components

## Essential information

Discretionary

  Accept.

## Supporting information

See if relevant

  Klinefelter syndrome is caused by a chromosomal abnormality that affects males. It may cause low levels of testosterone so that affected men, not on replacement therapy, may have haemoglobin levels in the female range. This may lead to them failing the haemoglobin screening test.

Reason for change:
  'Additional Information' has been added.
Version details:

  WB-DSG Edition 203 Release 01 (01 June 2010)

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