Test Catalog

Test ID: ADEVL    
Alzheimer Disease Evaluation, Spinal Fluid

Specimen Type Describes the specimen type validated for testing


Specimen Required Defines the optimal specimen required to perform the test and the preferred volume to complete testing

Patient Preparation: For 12 hours before specimen collection do not take multivitamins or dietary supplements containing biotin (vitamin B7), which is commonly found in hair, skin, and nail supplements and multivitamins.

Supplies: Alzheimer’s Disease Evaluation (ADEVL) Collection Kit (T836)

Collection Container/Tube: CSF AD Biomarker Tube; specimens not collected in this tube will be rejected

Specimen Volume: 2 mL

Collection Instructions:

1. Perform lumbar puncture and discard the first 1 to 2 mL of cerebrospinal fluid (CSF).

2. Collect 2 mL of CSF directly into CSF AD Biomarker Tube. Do not aliquot. Analysis needs to be performed using collection tube.


If not ordering electronically, complete, print, and send a Neurology Specialty Testing Client Test Request (T732) with the specimen.

Specimen Minimum Volume Defines the amount of sample necessary to provide a clinically relevant result as determined by the Testing Laboratory

See Specimen Required

Reject Due To Identifies specimen types and conditions that may cause the specimen to be rejected

Gross hemolysis Reject
Gross lipemia OK
Gross icterus Reject
Any tube other than CSF AD Biomarker Tube Reject

Specimen Stability Information Provides a description of the temperatures required to transport a specimen to the performing laboratory, alternate acceptable temperatures are also included

Specimen TypeTemperatureTimeSpecial Container
CSFFrozen (preferred)30 daysBlueTop SARSTEDT
 Refrigerated 14 daysBlueTop SARSTEDT
 Ambient 12 hoursBlueTop SARSTEDT