Free T4 test cost in Eureka, CA — inpatient
In Eureka-Arcata, CA, 2 hospitals list a cash price for free T4 (free thyroxine) thyroid blood test as an inpatient: from $55.85 to $55.85, with a median of $55.85. The lowest listed price is at Providence Redwood Memorial Hospital and 1 other hospital. Across California, the median is $68.12 at 104 hospitals.
Cash prices at 2 facilities across 2 cities for code 84439, as an inpatient (admitted to hospital) . 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 Eureka-Arcata, CA.
Hospitals, cheapest first
| Hospital | Cash price | List price | Insurers pay | Off list | File date |
|---|---|---|---|---|---|
| Providence Redwood Memorial Hospital lowest Fortuna, CA · (707) 445-8121 HC ASSAY OF FREE THYROXINE CDM | $55.85 | $109.50 | — | 49% | Apr 1, 2026 source file |
| Providence St Joseph Hospital lowest Eureka, CA · (707) 445-8121 HC ASSAY OF FREE THYROXINE CDM | $55.85 | $109.50 | — | 49% | Apr 1, 2026 source file |
Inpatient: lowest $55.85, median $55.85, highest $55.85.
As an outpatient, the same code is billed by 2 facilities here, median $55.85 — that is the price to compare if you are not being admitted.
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.
2 rows held back from this comparison
They are priced below $1 or below a tenth of the national median for code 84439 ($60.00). Such a line is almost always a physician's fee billed separately, an assistant's share or a placeholder — a real charge, but not the price of the procedure itself.
| Providence Redwood Memorial Hospital Fortuna, CAHC ASSAY OF FREE THYROXINE LAB | $5.10 | file |
| Providence St Joseph Hospital Eureka, CAHC ASSAY OF FREE THYROXINE LAB | $5.10 | file |