Free T4 (thyroid) test at Kaiser Foundation Hospital - South San Francisco
CPT 84439 · South San Francisco, CA
These are Kaiser Foundation Hospital - South San Francisco'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 36 California hospitals we index that post a cash price for this service: lowest $16.10, median $102.48, highest $740.75. See every hospital.
Nearby hospitals, same service
| Hospital | Distance | Cash price | Gross charge | File date |
|---|---|---|---|---|
| St. Rose Hospital Hayward, CA | 16.2 mi | $157.59 | $309.00 | 2026-04-01 |
| Kaiser Foundation Hospital - Oakland/Richmond Oakland, CA | 16.5 mi | $102.48 | $183.00 | 2026-04-01 |
| Kaiser Foundation Hospital - Redwood City Redwood City, CA | 16.6 mi | $102.48 | $183.00 | 2026-04-01 |
| Marinhealth Medical Center Greenbrae, CA | 21.5 mi | $190.94 | $318.24 | 2026-03-26 |
| Kaiser Foundation Hospital - Walnut Creek Walnut Creek, CA | 26.4 mi | $102.48 | $183.00 | 2026-04-01 |
| Kaiser Foundation Hospital - Fremont Fremont, CA | 27.4 mi | $102.48 | $183.00 | 2026-04-01 |
| Kaiser Foundation Hospital - Woodland Hills Woodland Hills, CA | 321.0 mi | $68.12 | $131.00 | 2026-04-01 |
| Providence Cedars Sinai Tarzana Medical Center Tarzana, CA | 324.7 mi | $122.85 | $351.00 | 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 - South San Francisco prices