ATN Neuro

Test Code

381852

CPT Codes
82233, 82234, 83884, 84393<br>Restricted Client Code

Includes

Quest AD Detect® Beta Amyloid 42/40
Quest AD Detect ptau181, Plasma
Neurofilament Light Chain (NfL)

Preferred Specimen

1.2 mL plasma collected in a K2 EDTA (lavender-top) tube, and
2 mL plasma collected in an EDTA (lavender-top) tube

Minimum Volume

0.6 mL K2 EDTA plasma and 1 mL EDTA plasma

Transport Temperature

Frozen

Specimen Stability

Room temperature: Unacceptable
Refrigerated: 72 hours
Frozen: 22 days

Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)

Specimen collected in glass polystyrene or polycarbonate tube • Moderate or gross hemolysis

Methodology
See individual assays

FDA Status
This test was developed and its analytical performance characteristics have been determined by Quest Diagnostics. It has not been cleared or approved by FDA. This assay has been validated pursuant to the CLIA regulations and is used for clinical purposes.

Setup Schedule

Set up and Report available: See individual assays

Reference Range

See Laboratory Report

The CPT Codes provided in this document are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payor being billed. Any Profile/panel component may be ordered separately. Reflex tests are performed at an additional charge.