Total T4 test cost in Eureka, CA — inpatient
In Eureka-Arcata, CA, 4 hospitals list a cash price for total thyroxine (T4) blood test as an inpatient: from $15.40 to $34.00, with a median of $19.02. The lowest listed price is at Providence Redwood Memorial Hospital and 1 other hospital — $3.62 less than the median here. Across California, the median is $39.20 at 185 hospitals.
Cash prices at 4 facilities across 4 cities for code 84436, as an inpatient (admitted to hospital) . Collected Sep 27, 2026; the hospital files themselves were last updated between Jul 22, 2025 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 |
|---|---|---|---|---|
| Providence Redwood Memorial Hospital lowest Fortuna, CA · (707) 445-8121 HC THYROXINE T4 File of Apr 1, 2026 · source file | $15.40 | $30.20 | — | 49% |
| Providence St Joseph Hospital lowest Eureka, CA · (707) 445-8121 HC THYROXINE T4 File of Apr 1, 2026 · source file | $15.40 | $30.20 | — | 49% |
| Jerold Phelps Community Hospital Garberville, CA · (707) 923-3921 HC ASSAY OF TOTAL THYROXINE - T4 (THYROID HORMONE) source file | $22.63 | $28.29 | $22.63–$28.29 | 20% |
| Mad River Community Hospital Arcata, CA · (707) 822-3621 **84436** File of Jul 22, 2025 · source file | $34.00 | $34.00 | — | — |
| Mad River Community Hospital Arcata, CA · (707) 822-3621 THYROID PROFILE II COMPREHENSIVE+1 more line at this price File of Jul 22, 2025 · source file | $47.92 | $47.92 | — | — |
Inpatient: lowest $15.40, median $19.02, highest $34.00 — a 2.2× difference within the same market.
As an outpatient, the same code is billed by 4 facilities here, median $19.02 — 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 total T4 test measures all the thyroxine hormone in the blood, both bound and free. Most doctors now order free T4 (84439) instead, which is less affected by pregnancy and medicines.
What the price covers
The price usually covers running the test. The blood draw (36415) is often billed as a separate line.
2 rows held back from this comparison
They are priced below $1 or below a tenth of the national median for code 84436 ($52.00). 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.
| Hospital | Cash price | File |
|---|---|---|
| Providence Redwood Memorial Hospital Fortuna, CAHC ASSAY OF THYROXINE TOTAL LAB | $2.23 | file |
| Providence St Joseph Hospital Eureka, CAHC ASSAY OF THYROXINE TOTAL LAB | $2.23 | file |