Free T4 test cost in Lakeland, FL
In Lakeland-Winter Haven, FL, 3 hospitals list a cash price for free T4 (free thyroxine) thyroid blood test: from $7.60 to $392.28, with a median of $218.74. The lowest listed price is at Orlando Health Lakeland Highlands Hospital — $211.14 less than the median here. Across Florida, the median is $70.60 at 81 hospitals.
Cash prices at 3 facilities across 3 cities for code 84439, as an outpatient — the setting a self-pay patient normally buys. Collected Sep 23, 2026; the hospital files themselves were last updated between Apr 1, 2026 and Apr 1, 2026.
Where each hospital's price falls
Each dot is one hospital's cash price on a scale from the lowest to the highest in Lakeland-Winter Haven, FL.
Hospitals, cheapest first
| Hospital | Cash price | List price | Insurers pay | Off list | File date |
|---|---|---|---|---|---|
| Orlando Health Lakeland Highlands Hospital lowest Lakeland, FL Hb Assay Of Free Thyroxine - T4 Free | $7.60 | $19.00 | — | 60% | Apr 1, 2026 source file |
| Orlando Health Lakeland Highlands Hospital Lakeland, FL Hb Free Thyroxine-Ref | $18.49 | $46.22 | — | 60% | Apr 1, 2026 source file |
| AdventHealth Lake Wales Lake Wales, FL · (863) 676-1433 HC T4 FREE - THYROXINE FREE | $218.74 | $218.74 | — | — | Apr 1, 2026 source file |
| AdventHealth Heart of Florida Davenport, FL · (863) 422-4971 HC T4 FREE - THYROXINE FREE | $392.28 | $392.28 | — | — | Apr 1, 2026 source file |
Outpatient: lowest $7.60, median $218.74, highest $392.28 — a 51.6× difference within the same market.
As an inpatient, the same code is billed by 3 facilities here, median $218.74. Inpatient and outpatient prices are not comparable and are kept on separate pages: the inpatient charge covers admission, not the same purchase.
What it is
A free T4 test measures thyroxine that is not bound to proteins, the active form of the main thyroid hormone. It is usually ordered with or after a TSH test to check for an underactive or overactive thyroid and to adjust thyroid medicine.
What the price covers
The price usually covers the free T4 test only. The blood draw and the TSH test (84443) are billed separately.