| Discretionary | Accept. |
| Additional Information | Klinefelter's 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. |
| Donor Information | If you wish to obtain more information regarding a personal medical issue please contact your National Help Line. Please do not contact this web site for personal medical queries, as we are not in a position to provide individual answers. |