Anti SSA Blood Test Results Explained. The anti SSA blood test is one of the testing methods that is available to medical providers to determine the presence of lupus. The SSA antibody is usually found with the SSB antibody, which means there is typically an anti SSB blood test ordered with the anti SSA test. It is not a specific enough test to determine a definitive diagnosis in a majority of patients, but it can be used with other tools and tests to determine if lupus is present.