Free T4 (thyroid) test at Robert Wood Johnson University Hospital at Rahway
CPT 84439 · Rahway, NJ
These are Robert Wood Johnson University Hospital at Rahway's own posted figures from its standard-charges file dated March 4, 2026. They are not a quote. Source: the hospital's file · its price transparency page.
Across 43 New Jersey hospitals we index that post a cash price for this service: lowest $9.00, median $9.92, highest $1,473.00. See every hospital.
Nearby hospitals, same service
| Hospital | Distance | Cash price | Gross charge | File date |
|---|---|---|---|---|
| Raritan Bay Medical Center Perth Amboy, NJ | 6.0 mi | $9.02 | $162.00 | 2025-12-31 |
| Newark Beth Israel Medical Center Newark, NJ | 8.1 mi | $9.92 | $138.00 | 2026-03-04 |
| Overlook Medical Center Summit, NJ | 8.7 mi | $133.41 | $1,895.00 | 2026-04-01 |
| The University Hospital Newark, NJ | 10.1 mi | $10.37 | $384.95 | 2026-08-13 |
| Staten Island University Hospital Staten Island, NY | 10.8 mi | $22.15 | 2026-03-31 | |
| Robert Wood Johnson University Hospital New Brunswick, NJ | 12.0 mi | $9.92 | $138.00 | 2026-03-04 |
| Saint Peter's University Hospital New Brunswick, NJ | 12.0 mi | $311.00 | $319.00 | 2025-11-19 |
| Cooperman Barnabas Medical Center Livingston, NJ | 12.6 mi | $9.92 | $138.00 | 2026-03-04 |
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 |
|---|---|---|---|---|
| HC Assay of Free Thyroxine - T4 Free standard_charge_information[73421] | outpatient | $9.92 | $179.00 | $4.24 – $120.28 |
| ASSAY OF FREE THYROXINE standard_charge_information[12979] | outpatient | $4.24 – $7.58 | ||
| ASSAY OF FREE THYROXINE standard_charge_information[12987] | outpatient | $7.58 – $7.58 | ||
| ASSAY OF FREE THYROXINE standard_charge_information[12991] | outpatient | $4.24 – $4.96 |
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 Robert Wood Johnson University Hospital at Rahway prices