Free T4 test cost in Red Bluff, CA
In Red Bluff, CA, 1 hospital lists a cash price for free T4 (free thyroxine) thyroid blood test: from $12.85 to $12.85, with a median of $12.85. Across California, the median is $68.12 at 162 hospitals.
Cash prices at 1 facility for code 84439, as an outpatient — the setting a self-pay patient normally buys. Collected Sep 27, 2026; the hospital files themselves were last updated between Feb 28, 2026 and Feb 28, 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 Red Bluff, CA.
Hospitals, cheapest first
| Hospital | Cash price | List price | Insurers pay | Off list | File date |
|---|---|---|---|---|---|
| Dignity Health lowest Red Bluff, CA · (530) 529-8000 RL-A-FT4 ED-TMS 93244 | $12.85 | $22.00 | $7.91–$22.00 | 42% | Feb 28, 2026 source file |
| Dignity Health Red Bluff, CA · (530) 529-8000 THYROXINE FREE NONL | $15.77 | $27.00 | $7.91–$26.46 | 42% | Feb 28, 2026 source file |
| Dignity Health Red Bluff, CA · (530) 529-8000 THYROXINE FREE | $60.16 | $103.00 | $7.91–$100.94 | 42% | Feb 28, 2026 source file |
Outpatient: lowest $12.85, median $12.85, highest $12.85.
As an inpatient, the same code is billed by 1 facility here, median $12.85. Inpatient and outpatient prices are not comparable and are kept on separate pages: the inpatient charge covers admission, not the same purchase.
Cash or insurance?
At the one hospital here that publishes insurer rates for this code, the cash price is below the highest rate a health plan has negotiated. If you have insurance but have not met your deductible, you usually pay your plan's negotiated rate, which falls somewhere in the "Insurers pay" column. Paying cash can cost less, but a cash payment usually does not count toward your deductible. Ask the hospital for both numbers before you book.
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 ($67.56). 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.
| Dignity Health Red Bluff, CARL-A-FT4 SP 70138 | $4.68 | file |
| Dignity Health Red Bluff, CARL-QD-FREE T4 | $5.61 | file |