CPT® 84394, Under Chemistry Procedures
The Current Procedural Terminology (CPT®) code 84394 as maintained by American Medical Association, is a medical procedural code under the range - Chemistry Procedures.
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Summary
The lab analyst performs a chemistry test to measure total tau. Providers may order the test to help diagnose and monitor neurodegenerative diseases, such as Alzheimer’s disease, as elevated levels of total tau are associated with neuronal damage and cell death.
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