Free T4 test cost in Missouri
In Missouri, 30 hospitals publish a cash price for free T4 (free thyroxine) thyroid blood test: from $9.00 to $228.15, with a median of $87.90. The lowest price is at St Joseph Medical Center (Kansas City). The highest price is 25.4× the lowest.
Outpatient cash prices, one line per hospital — its lowest listed price for code 84439. Prices for both sides of the body and inpatient prices are not mixed in. Collected Sep 25, 2026.
Lowest$9.00St Joseph Medical Center
Median$87.90half pay less
Highest$228.15in Missouri
Lowest saves$78.90vs the median
Hospitals in Missouri, cheapest first
| Hospital | Cash price | List price | File date |
|---|---|---|---|
| St Joseph Medical Center lowest Kansas City · Kansas City, MO-KS Hc Assay Of Free Thyroxine | $9.00 | $209.97 | Mar 17, 2026 source file |
| Western Missouri Medical Center Warrensburg · Warrensburg, MO Free T4 | $15.00 | $160.70 | Dec 1, 2024 source file |
| Mercy Hospital Southeast Cape Girardeau · Cape Girardeau, MO-IL Assay of Free Thyroxine | $16.50 | $22.00 | Jun 12, 2026 source file |
| Mercy Hospital Stoddard Bernie · Bernie, MO Assay of Free Thyroxine | $23.25 | $31.00 | Jun 12, 2026 source file |
| Mercy Hospital Stoddard Dexter · Dexter, MO Assay of Free Thyroxine | $23.25 | $31.00 | Jun 12, 2026 source file |
| Children's Mercy Hospital Kansas City · Kansas City, MO-KS T4 FREE BY DIALYSIS | $31.68 | $66.00 | — source file |
| Boone Hospital Center Columbia · Columbia, MO THYROXINE FREE | $35.23 | $58.71 | Apr 1, 2026 source file |
| Ranken Jordan Home for Convalescent Crippled Children Hospital Maryland Heights · St. Louis, MO-IL T4, Free, Direct Dialysis | $40.10 | $50.12 | Apr 24, 2026 source file |
| NKC Health North Kansas City · Kansas City, MO-KS THYROXINE FREE | $40.31 | $139.00 | Mar 6, 2026 source file |
| Curators of the University of Missouri Columbia · Columbia, MO THYROXINE FREE P31020231 | $44.22 | $73.70 | Dec 15, 2025 source file |
| Mercy Hospital St Louis Saint Louis · St. Louis, MO-IL T4 Thyroxine Free | $48.10 | $74.00 | — source file |
| Shriners Childrens - St Louis Saint Louis · St. Louis, MO-IL THYROXINE (THYROID CHEMICAL); FREE | $70.80 | $70.80 | — source file |
| Mercy Hospital Carthage Carthage · Joplin, MO-KS T4 Thyroxine Free | $74.10 | $114.00 | — source file |
| Mercy Hospital South Saint Louis · St. Louis, MO-IL T4 Thyroxine Free | $84.50 | $130.00 | — source file |
| Mercy Perry Perryville · Perryville, MO T4 Thyroxine Free | $85.80 | $132.00 | — source file |
| Mercy Hospital Perry Perryville · Perryville, MO Assay of Free Thyroxine | $90.00 | $120.00 | Jun 12, 2026 source file |
| Mercy Hospital Jefferson Festus · St. Louis, MO-IL T4 Thyroxine Free | $90.35 | $139.00 | — source file |
| Mercy Hospital Aurora Aurora · Aurora, MO T4 Thyroxine Free | $104.00 | $160.00 | — source file |
| Mercy Hospital Cassville Cassville · Cassville, MO T4 Thyroxine Free | $104.00 | $160.00 | — source file |
| Mercy St. Francis Hospital Mountain View · West Plains, MO T4 Thyroxine Free | $104.00 | $160.00 | — source file |
| Freeman Health System - Freeman West Joplin · Joplin, MO-KS T4 FREE | $112.56 | $281.40 | Sep 1, 2026 source file |
| Mercy Hospital Lincoln Troy · St. Louis, MO-IL T4 Thyroxine Free | $115.05 | $177.00 | — source file |
| Mercy Hospital Springfield Springfield · Springfield, MO T4 Thyroxine Free | $116.35 | $179.00 | — source file |
| Mercy Hospital Springfield Ozark · Springfield, MO T4 Thyroxine Free | $116.35 | $179.00 | — source file |
| Mercy Hospital Joplin Joplin · Joplin, MO-KS T4 Thyroxine Free | $117.00 | $180.00 | — source file |
| Fitzgibbon Hospital Marshall · Marshall, MO Thyroxine (thyroid chemical), free | $123.98 | $154.98 | Feb 2, 2026 source file |
| Mercy Hospital Lebanon B Lebanon · Lebanon, MO T4 Thyroxine Free | $124.80 | $192.00 | — source file |
| Mercy Hospital Washington Washington · St. Louis, MO-IL T4 Thyroxine Free | $125.45 | $193.00 | — source file |
| Mercy Hospital Stoddard Dexter · Dexter, MO T4 Thyroxine Free | $174.20 | $268.00 | — source file |
| Mercy Hospital Southeast Cape Girardeau · Cape Girardeau, MO-IL T4 Thyroxine Free | $228.15 | $351.00 | — source file |
By metro area
Each metro page compares every listing, including prices for both sides of the body.
| Metro area | Hospitals | Lowest | Median |
|---|---|---|---|
| St. Louis, MO-IL | 7 | $40.10 | $84.50 |
| Joplin, MO-KS | 3 | $74.10 | $112.56 |
| Kansas City, MO-KS | 3 | $9.00 | $31.68 |
| Cape Girardeau, MO-IL | 2 | $16.50 | $122.32 |
| Columbia, MO | 2 | $35.23 | $39.72 |
| Dexter, MO | 2 | $23.25 | $98.72 |
| Perryville, MO | 2 | $85.80 | $87.90 |
| Springfield, MO | 2 | $116.35 | $116.35 |
| Aurora, MO | 1 | $104.00 | $104.00 |
| Bernie, MO | 1 | $23.25 | $23.25 |
| Cassville, MO | 1 | $104.00 | $104.00 |
| Lebanon, MO | 1 | $124.80 | $124.80 |
| Marshall, MO | 1 | $123.98 | $123.98 |
| Warrensburg, MO | 1 | $15.00 | $15.00 |
| West Plains, MO | 1 | $104.00 | $104.00 |
What it is
A free T4 test measures thyroxine that is not bound to proteins, the active form of the main thyroid hormone. It is usually ordered with or after a TSH test to check for an underactive or overactive thyroid and to adjust thyroid medicine.
What the price covers
The price usually covers the free T4 test only. The blood draw and the TSH test (84443) are billed separately.
Free T4 (free thyroxine) thyroid blood test in other states
- Alabama$74.96
- Alaska$68.40
- Arizona$17.45
- Arkansas$48.10
- California$68.12
- Colorado$49.00
- Connecticut$55.55
- Delaware$157.92
- Florida$70.60
- Georgia$137.67
- Hawaii$44.40
- Idaho$40.00
- Illinois$82.08
- Indiana$72.25
- Iowa$61.18
- Kansas$109.75
- Kentucky$113.03
- Louisiana$37.66
- Maine$55.38
- Maryland$44.06
- Massachusetts$43.62
- Michigan$37.00
- Minnesota$65.27
- Mississippi$24.48
- Montana$51.20
- Nebraska$63.84
- Nevada$65.41
- New Hampshire$78.53
- New Jersey$10.37
- New Mexico$125.20
- New York$48.47
- North Carolina$78.40
- North Dakota$32.13
- Ohio$40.30
- Oklahoma$61.33
- Oregon$44.25
- Pennsylvania$63.90
- Puerto Rico$18.00
- Rhode Island$72.00
- South Carolina$105.00
- South Dakota$64.80
- Tennessee$27.50
- Texas$39.51
- Utah$84.43
- Vermont$114.00
- Virginia$57.00
- Washington$63.84
- West Virginia$45.75
- Wisconsin$70.85
- Wyoming$18.62
Median cash price across the state's hospitals.