Free T4 test cost in Greeneville, TN — inpatient
In Greeneville, TN, 1 hospital lists a cash price for free T4 (free thyroxine) thyroid blood test as an inpatient: from $15.75 to $15.75, with a median of $15.75. Across Tennessee, the median is $27.50 at 44 hospitals.
Cash prices at 1 facility for code 84439, as an inpatient (admitted to hospital) . Collected Sep 22, 2026; the hospital files themselves were last updated between Mar 23, 2026 and Mar 23, 2026.
Hospitals, cheapest first
| Hospital | Cash price | List price | Insurers pay | Off list | File date |
|---|---|---|---|---|---|
| Greeneville Community Hospital Greeneville, TN HC FREE T4 THYROXINE | $15.75 | $105.00 | $4.06–$105.00 | 85% | Mar 23, 2026 source file |
Inpatient: lowest $15.75, median $15.75, highest $15.75.
As an outpatient, the same code is billed by 1 facility here, median $15.75 — that is the price to compare if you are not being admitted.
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.