Dementia Panel, Secondary Causes
Test code
CPT code(s)*
Clinical significance
Test resources
Details
Includes
Comprehensive Metabolic Panel
CBC (includes Differential and Platelets)
TSH
Vitamin B12 (Cobalamin)
Folate
Methodology
See individual tests
Alternative name(s)
Executive Function,Dysarthria,Visual Spatial,Alzheimer's,Aphasia,APOE Phenotype,Apraxia,Cognitive Decline,Cerebral Vascular Disease (CVD),Memory,Cognitive Impairment,Dementia, Secondary Causes Panel
Specimen requirements | |
|---|---|
| Patient preparation | Fasting specimen is preferred. Specimen collection after fluorescein dye angiography should be delayed for at least 3 days. For patients on hemodialysis, specimen collection should be delayed for 2 weeks. According to the assay manufacturer Siemens: "Samples containing fluorescein can produce falsely depressed values when tested with the Advia Centaur TSH3 Ultra assay." |
| Preferred specimen(s) | Whole blood from a full EDTA (lavender-top) tube and 5 mL serum |
| Collection instructions | EDTA (lavender-top): Maintain specimen at room temperature. Do not refrigerate. If multiple draw, collect EDTA (lavender-top) tube last. Traumatic draw can introduce thromboplastin and trap WBC and platelets. Refrigeration can precipitate fibrin and trap WBC and platelets. Serum note: If transport to performing laboratory will exceed 24 hours please transport refrigerated (cold packs). |
| Transport container | EDTA (lavender-top) tube and Serum separator tube (SST) |
| Transport temperature | Whole blood: Room temperature Serum: Room temperature |
| Specimen stability | Whole blood Room temperature: 48 hours Refrigerated: 48 hours (may cause platelet clumping) Frozen: Unacceptable Serum Room temperature: 36 hours Refrigerated: 72 hours Frozen: Unacceptable |
Reference ranges are provided as general guidance only. To interpret test results use the reference range in the laboratory report.
*The CPT codes provided are based on AMA guidance and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payer being billed.
This material contains content from LOINC® (http://loinc.org). The LOINC Table, LOINC Table Core are copyright © 1995-2019, Regenstrief Institute, Inc. and the Logical Observation Identifiers Names and Codes (LOINC) Committee and is available at no cost under the license at http://loinc.org/license.
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