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CSF ADMARK ALZHEIMER'S EVALUATION
MessagePerform lumbar puncture (LP) before noonPerform lumbar puncture (LP) using gravity drip collection method. Avoid the use of syringes or tubings. Immediate Specimen Processing: Do not process the CSF sample before transport to the lab (i. e. , no mixing/inverting, no tube transfers, no aliquoting, no freezing and no centrifugation)Ambulatory Transport Temperature to Inova Central Lab: Refrigerated Specimen Stability: 14 days
Test Code
LAB3419 ADEVL
Alias/See Also
ADEVL
CPT Codes
82234| 84393| 84394
Includes
Includes: Beta-Amyloid (1-42) CSF, tTau CSF, pTau181 CSF, tTau/Abeta42 Ratio, pTau181/Abeta42 Ratio@BKRCERMSGREFRESH(2302793)@ @BKRCERMSGREFRESH(2302794)@
Instructions
Processing Instructions: Do not use the first 2 mL of CSF for AD Biomarker measurement. Send original CSF tube. (i.e., no mixing/inverting, no tube transfers, no aliquoting, no freezing and no centrifugation).Preferred Testing Volume: 2.5 mL CSFMinimum Testing Volume: 1.0 mL CSF Transport Temperature: Refrigerated Stability: Ambient: 5 daysRefrigerated : 14 daysFrozen: 56 daysCauses for Rejection: Gross HemolysisPerforming Lab: Quest SJC
Report Available
16-Days
Clinical Significance
1230171400
Last Updated: May 18, 2026