Free T4 test cost in Florence, SC
In Florence, SC, 1 hospital lists a cash price for Free T4 (free thyroxine) thyroid blood test: from $183.50 to $183.50, with a median of $183.50. Across South Carolina, the median is $105.00 at 19 hospitals.
Cash prices at 1 facility 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.
Hospitals, cheapest first
| Hospital | Cash price | List price | Insurers pay | Off list | File date |
|---|---|---|---|---|---|
| MUSC Health Florence Medical Center Florence, SC HB THYROXINE FREE RIA ASSAY | $183.50 | $367.00 | — | 50% | Apr 1, 2026 source file |
Outpatient: lowest $183.50, median $183.50, highest $183.50.
As an inpatient, the same code is billed by 1 facility here, median $183.50. 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.