SD in FDA could mean:
Similar to SD
A/L - Annual LeaveA2LA - American Association for Laboratory Accreditation
AAA - Abdominal Aortic Aneurysm
AAALAC - Association for Assessment and Accreditation of Laboratory Animal Care International
AAAP - American Association of Avian Pathologists
AABB - American Association of Blood Banks
AABP - American Association of Bovine Practitioners
View all in FDA