Free T4 test cost in Friday Harbor, WA
In Friday Harbor, WA, 1 hospital lists a cash price for free T4 (free thyroxine) thyroid blood test: from $38.35 to $38.35, with a median of $38.35. Across Washington, the median is $63.84 at 33 hospitals.
Cash prices at 1 facility for code 84439, as an outpatient — the setting a self-pay patient normally buys. Collected Sep 22, 2026; the hospital files themselves were last updated between — and —.
Hospitals, cheapest first
| Hospital | Cash price | List price | Insurers pay | Off list | File date |
|---|---|---|---|---|---|
| PeaceHealth Peace Island Medical Center Friday Harbor, WA · (360) 378-2141 THYROXINE (THYROID CHEMICAL); FREE | $38.35 | $59.00 | — | 35% | — source file |
Outpatient: lowest $38.35, median $38.35, highest $38.35.
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.