84439 Assay of free thyroxine
Pathology & Lab
Also known as: free T4, FT4, free thyroxine
Quantitative assay of free thyroxine (free T4) concentration, measuring unbound physiologically active hormone.
Clinical Context
Gold standard for thyroid function assessment; more specific than total T4; abnormal in hyper/hypothyroidism.
RVU Breakdown
| Work RVU | 0.00 |
| Practice Expense RVU | 0.00 |
| Malpractice RVU | 0.00 |
| Total RVU | 0.00 |
Specialties
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CPT® is a registered trademark of the American Medical Association. Data sourced from CMS Physician Fee Schedule RVU26A. Descriptions, synonyms, and clinical context are original content by RVU Edge.