I'm ineligible to donate in the US because I lived in England for years during the 1980s.
You are not eligible to donate if:
From January 1, 1980, through December 31, 1996, you spent (visited or lived) a cumulative time of 3 months or more, in the United Kingdom (UK), or
From January 1, 1980, to present, you had a blood transfusion in any country(ies) in the (UK) or France. The UK includes any of the countries listed below.
Isle of Man
You were a member of the U.S. military, a civilian military employee, or a dependent of a member of the U.S. military who spent a total time of 6 months on or associated with a military base in any of the following areas during the specified time frames
From 1980 through 1990 - Belgium, the Netherlands (Holland), or Germany
From 1980 through 1996 - Spain, Portugal, Turkey, Italy or Greece.
You spent (visited or lived) a cumulative time of 5 years or more from January 1, 1980, to present, in any combination of country(ies) in Europe, including
in the UK from 1980 through 1996 as listed above
on or associated with military bases as described above, and
in other countries in Europe as listed below:
Ireland (Republic of)
Spanish North African Territories (Penon de Velez De la Gomera, Penon de Alhucemas, Islas Chafarinas, and the cities of Centa and Melilla)
Yugoslavia (or the former Federal Republic of Yugoslavia)