Free T4 (thyroid) test at Kaiser Foundation Hospital - Redwood City
CPT 84439 · Redwood City, CA
These are Kaiser Foundation Hospital - Redwood City'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 |
|---|---|---|---|---|
| Sequoia Hospital Redwood City, CA | 7.0 mi | $91.73 | $252.00 | 2026-02-28 |
| St. Rose Hospital Hayward, CA | 10.2 mi | $77.49 | $258.30 | 2026-02-23 |
| Peninsula Medical Center Burlingame, CA | 11.2 mi | $231.00 | $231.00 | 2026-04-01 |
| Kaiser Foundation Hospital - Fremont Fremont, CA | 13.1 mi | $102.48 | $183.00 | 2026-04-01 |
| Kaiser Foundation Hospital - San Leandro San Leandro, CA | 15.5 mi | $102.48 | $183.00 | 2026-04-01 |
| Kaiser Foundation Hospital - South San Francisco South San Francisco, CA | 16.6 mi | $102.48 | $183.00 | 2026-04-01 |
| Eden Medical Center Castro Valley, CA | 18.1 mi | $231.00 | $231.00 | 2026-04-01 |
| California Pacific Medical Center-Davies Campus Hospital San Francisco, CA | 23.5 mi | $231.00 | $231.00 | 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 8803 | both | $102.48 | $183.00 | $8.00 – $25.00 |
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 - Redwood City prices