New Test Guides. Alzheimer’s Disease Beta-Amyloid 42/40 Ratio, Plasma This test is used to help assess whether Alzheimer’s disease (AD) in adults is the cause of subjective cognitive decline (SCD), mild cognitive impairment (MCI), or dementia.. Cardio IQ Diabetes Risk Panel with Score This test provides an 8-year risk of diabetes mellitus and can be used to identify patients suitable for …