Biotech Values

[iwfal]

The test, which measures proteins in spinal fluid that can point to Alzheimer's, was 87 percent accurate at predicting which patients with early memory problems and other symptoms of cognitive impairment would eventually be diagnosed with Alzheimer's

...

The test also ruled out the disease in 95.2 percent of the volunteers

FWIW not a particularly good stand alone test as of yet - false positive vs false negative ratio is not good enough yet.