MAC is a genetic immunodeficiency condition in Miniature Schnauzers that surfaced in America and Canada during the 1980’s.
The first clinical sign of MAC infection is lymph node enlargement. The bacterial infection affects the liver and spleen, resulting in liver and spleen enlargement. This presentation can easily be confused with lymphoma that also presents with generalized lymph node enlargement and may result in a misdiagnosis, unless a lymph node biopsy or aspirate is performed with an acid-fast stain to identify cellular changes characteristic of mycobacterial infection.
Please go to Links tab and Click on The American Miniature Schnauzer Club MAC Results for world-wide Results
Please see below for current up to date UK MAC Test Results
UK Mac Test Results