Alzheimer’s disease (AD) is a progressive neurodegenerative disorder and the most common cause of dementia worldwide. Diagnosis has traditionally relied on a combination of careful clinical assessment, neuropsychological testing, and brain imaging, all of which remain essential in evaluating memory loss and cognitive decline. These approaches help rule out other causes of dementia and establish the clinical suspicion of Alzheimer’s disease.
In recent years, laboratory testing has added a powerful new dimension to the diagnostic process. Biomarker assays provide objective evidence of the biological changes that underlie Alzheimer’s, offering clarity in cases where clinical presentation alone may be uncertain. When used alongside established diagnostic methods, lab tests improve accuracy, enable earlier detection, and help guide treatment decisions.