Free T4 (thyroid) test at St. John's Riverside Hospital
CPT 84439 · Yonkers, NY
These are St. John's Riverside Hospital's own posted figures from its standard-charges file dated March 27, 2026. They are not a quote. Source: the hospital's file · its price transparency page.
Across 84 New York hospitals we index that post a cash price for this service: lowest $9.00, median $38.20, highest $492.05. See every hospital.
Nearby hospitals, same service
| Hospital | Distance | Cash price | Gross charge | File date |
|---|---|---|---|---|
| St. Joseph's Medical Center Yonkers, NY | 0.0 mi | $9.02 | $113.00 | 2026-07-13 |
| Montefiore Mount Vernon Hospital Mount Vernon, NY | 3.7 mi | $98.80 | $152.00 | 2026-09-28 |
| Montefiore Medical Center Bronx, NY | 5.0 mi | $156.31 | $239.00 | 2026-09-28 |
| Englewood Hospital and Medical Center Englewood, NJ | 6.2 mi | $40.00 | $400.00 | 2026-02-02 |
| Jacobi Medical Center Bronx, NY | 7.2 mi | $9.02 | $37.80 | 2026-09-05 |
| Hackensack University Medical Center Hackensack, NJ | 9.5 mi | $9.02 | $162.00 | 2025-12-31 |
| Phelps Hospital Sleepy Hollow, NY | 9.5 mi | $22.15 | 2026-03-31 | |
| Harlem Hospital Center New York, NY | 9.7 mi | $9.02 | $37.80 | 2026-09-05 |
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 4801 | outpatient | $236.30 | $278.00 | $8.57 – $3,783.00 |
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 St. John's Riverside Hospital prices