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Test Code MISLAB; 11786 Quest AD-Detect™, Beta-Amyloid 42/40 Ratio, Plasma

Important Note

Blood test for Alzheimer's Disease

Note: Quest Diagnostics does not perform this test for individuals under the age of 18. Pre-test and post-test counseling is strongly recommended.

Additional Codes

Epic EAP Ordering Code
LAB2607 MISLAB: 11786 Beta Amyloid 42 40 Ratio

Specimen Requirements

Preferred Specimen(s)

1.2 mL plasma collected in a K2 EDTA (lavender-top) tube

 

Minimum Volume

0.6 mL

 

Collection Instructions

Collect blood into a K2 EDTA Plasma tube and mix by inversion 10 times. Centrifuge to separate cells from plasma at room temperature (18-25° C) within 1 hour of collection. If not centrifuging right away, store blood on ice until ready to centrifuge. Carefully transfer plasma into a clean 12x75 mm polypropylene tube. Store frozen.

CPT

0346U

Specimen Transport Temperature

 

Send frozen

 

Room temperature: Unacceptable
Refrigerated: 72 hours
Frozen -20° C: 32 days
Frozen -70° C: 77 days