Free T4 (thyroid) test at Kaiser Foundation Hospital Fontana/Ontario
CPT 84439 · Fontana, CA
These are Kaiser Foundation Hospital Fontana/Ontario's own posted figures from its standard-charges file dated April 1, 2026. They are not a quote. Source: the hospital's file · its price transparency page.
Across 77 California hospitals we index that post a cash price for this service: lowest $7.23, median $93.86, highest $740.75. See every hospital.
Nearby hospitals, same service
| Hospital | Distance | Cash price | Gross charge | File date |
|---|---|---|---|---|
| Riverside Community Hospital Riverside, CA | 8.2 mi | $740.75 | $740.75 | 2026-09-01 |
| Community Hospital of San Bernardino San Bernardino, CA | 8.3 mi | $28.16 | $72.00 | 2026-02-28 |
| Arrowhead Regional Medical Center Colton, CA | 11.0 mi | $209.00 | $209.00 | 2026-02-25 |
| Kaiser Foundation Hospital, Riverside Riverside, CA | 11.2 mi | $68.12 | $131.00 | 2026-04-01 |
| San Antonio Regional Hospital Upland, CA | 11.3 mi | $185.00 | $532.00 | 2026-04-02 |
| Montclair Hospital Medical Center Montclair, CA | 13.4 mi | $9.00 | $341.48 | 2026-09-01 |
| Chino Valley Medical Center Chino, CA | 13.7 mi | $9.00 | $341.48 | 2026-09-01 |
| St. Bernardine Medical Center San Bernardino, CA | 14.4 mi | $22.32 | $67.00 | 2026-02-28 |
Distances are straight-line from ZIP code centers. Each hospital's figures come from its own file; files are updated on different dates.
Every row for CPT 84439 in this hospital's file
| Row in the hospital's file | Setting | Cash | Gross | Insurer min – max |
|---|---|---|---|---|
| ASSAY OF FREE THYROXINE line 9454 | both | $68.12 | $131.00 | $7.00 – $20.00 |
| Assay of free thyroxine mod TC line 9453 | both | $7.00 – $20.00 |
The first row is the one used above. A price for one code usually covers the hospital's facility charge only; the doctor, anesthesia, pathology and other services can be billed separately. Ask the hospital for a good faith estimate before a scheduled service: if you pay yourself and the bill comes in $400 or more above the estimate, you can dispute it under the No Surprises Act.
Check a bill from this hospital All Kaiser Foundation Hospital Fontana/Ontario prices