Free T4 (thyroid) test at Kaiser Foundation Hospital - Downey
CPT 84439 · Downey, CA
These are Kaiser Foundation Hospital - Downey'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 |
|---|---|---|---|---|
| Coast Plaza Hospital Norwalk, CA | 3.5 mi | $165.90 | $165.90 | 2026-02-04 |
| Community Hospital of Huntington Park Huntington Park, CA | 5.9 mi | $165.90 | $165.90 | 2026-02-04 |
| La Palma Intercommunity Hospital La Palma, CA | 7.6 mi | $9.00 | $328.31 | 2026-09-01 |
| East Los Angeles Doctors Hospital Los Angeles, CA | 7.7 mi | $165.90 | $165.90 | 2026-02-04 |
| Los Angeles Community Hospital Los Angeles, CA | 7.7 mi | $305.07 | $305.07 | 2026-03-18 |
| Memorialcare Long Beach Medical Center Long Beach, CA | 8.1 mi | $58.00 | $58.00 | 2026-04-01 |
| Memorial Hospital of Gardena Gardena, CA | 9.2 mi | $165.90 | $165.90 | 2026-02-04 |
| Kaiser Foundation Hospital - South Bay Harbor City, CA | 12.5 mi | $68.12 | $131.00 | 2026-04-01 |
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 - Downey prices