Free T4 (thyroid) test at Mount Auburn Hospital
CPT 84439 · Cambridge, MA
These are Mount Auburn Hospital'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.
The posted cash price equals the gross charge: this file shows no self-pay discount for this service.
Across 22 Massachusetts hospitals we index that post a cash price for this service: lowest $17.20, median $88.70, highest $239.00. See every hospital.
Nearby hospitals, same service
| Hospital | Distance | Cash price | Gross charge | File date |
|---|---|---|---|---|
| Cambridge Health Alliance Cambridge, MA | 2.1 mi | $45.00 | $45.00 | 2026-03-20 |
| Boston Medical Center-Brighton Brighton, MA | 2.3 mi | $17.20 | $38.22 | 2026-03-13 |
| Beth Israel Deaconess Medical Center Boston, MA | 2.8 mi | $239.00 | $239.00 | 2026-04-01 |
| Brigham and Women's Hospital Boston, MA | 3.5 mi | $113.25 | $151.00 | 2026-03-27 |
| Massachusetts General Hospital Boston, MA | 3.7 mi | $113.25 | $151.00 | 2026-03-27 |
| Massachusetts Eye and Ear Infirmary - Boston, MA | 3.7 mi | $99.00 | $132.00 | 2026-03-27 |
| The Shriners' Hospital for Children - Boston Boston, MA | 3.7 mi | $87.40 | $87.40 | 2026-03-17 |
| New England Baptist Hospital Boston, MA | 3.8 mi | $160.00 | $160.00 | 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 |
|---|---|---|---|---|
| CHG ASSAY OF FREE THYROXINE standard_charge_information[5395] | both | $90.00 | $90.00 | |
| Assay of free thyroxine standard_charge_information[16877] | outpatient | $9.02 – $24.65 |
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 Mount Auburn Hospital prices