Test Overview
Test Methodology

Chemiluminescent Enzyme Immunoassay

Test Usage

Evaluation of individuals, aged 50 years and older, presenting with cognitive impairment who are being assessed for Alzheimer disease and other causes of cognitive decline

Reference Range *

Negative: < or =0.185 pg/mL; Intermediate: 0.186-0.324 pg/mL; Positive: > or =0.325 pg/mL

* Reference ranges may change over time. Please refer to the original patient report when evaluating results.

Test Limitations

This test is not intended as a screening test for Alzheimer disease in asymptomatic individuals.

Test Details
Days Set Up
Tuesday, Thursday
Analytic Time

2 - 6 days

Soft Order Code
PT217
Synonyms
    Laboratory
    Sendout
    Reference Laboratory
    Mayo (PT217)
    Section
    Special Testing
    Specimen Requirements
    Collection Instructions

    Collect specimen in an EDTA lavender top tube. Spin, and aliquot into a screw capped plastic tube. Send to Specimen Processing refrigerated.

    Normal Volume
    0.6 mL plasma
    Minimum Volume
    0.5 mL plasma
    Storage Temperature
    Refrigerated preferred, frozen acceptable
    Additional Information

    Test performed by Mayo Clinic Laboratories

    Billing
    CPT Code
    84393
    Fee Code
    AB177
    NY State Approved
    No