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Quest Diagnostics expands Alzheimer's blood tests with FDA-cleared Elecsys pTau217 and new multi-biomarker panel.

Market News
24 Aug 2026
PRNewsWire
View Source
Bullish
Quest Diagnostics expands Alzheimer's blood tests with FDA-cleared Elecsys pTau217 and new multi-biomarker panel.

Quest Diagnostics announced two advancements in its Quest AD-Detect® blood tests for Alzheimer's disease. The company will add the FDA-cleared Elecsys® pTau217 test, the first single-assay blood test for amyloid pathology, to its portfolio by late 2026. Additionally, Quest is launching a new multi-biomarker AD-Detect test combining pTau217, amyloid beta 42/40, and APOE genetic risk markers, achieving a low 10% indeterminate rate. These tests offer less invasive, cost-effective alternatives to PET scans and cerebrospinal fluid testing, improving access and accuracy for Alzheimer's diagnosis nationwide.

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