Free T4 test cost in Colorado
In Colorado, 48 hospitals publish a cash price for free T4 (free thyroxine) thyroid blood test: from $6.36 to $1,308.50, with a median of $104.02. The lowest price is at Banner Fort Collins Medical Center (Fort Collins). The highest price is 205.7× the lowest.
- The median here, $104.02, is 56% above the US median of $66.50.
- That is 11.5× Medicare's 2026 national rate for the same service ($9.02).
- Colorado ranks 46th of 51 states by median, cheapest first.
- 21 of 48 hospitals list a cash price equal to their full list price, with no self-pay discount.
Colorado's Hospital Discounted Care law (HB21-1198): for qualifying patients with household income at or below 250% of the federal poverty level, hospitals and the clinicians who work in them may charge no more than the greater of the Medicare rate or the Medicaid base rate, and monthly payments are capped. That can be less than the cash prices below; ask the hospital to screen you for discounted care. Other states' laws.
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 Nov 10, 2026. See them on a map
Lowest$6.36Banner Fort Collins Medical Center
Median$104.02half of hospitals charge less
Highest$1,308.50in Colorado
Lowest saves$97.66vs the median
Hospitals in Colorado, cheapest first
| Hospital | Cash price | List price | File date |
|---|---|---|---|
| Banner Fort Collins Medical Center lowest Fort Collins · Fort Collins-Loveland, CO LAB THYROXINE T4 FREE | $6.36 | $28.00 | Sep 23, 2026 source file |
| Banner North Colorado Medical Center Greeley · Greeley, CO LAB THYROXINE T4 FREE | $6.44 | $28.00 | Sep 23, 2026 source file |
| Sterling Regional Medical Center Sterling · Sterling, CO LAB THYROXINE T4 FREE | $9.24 | $28.00 | Sep 23, 2026 source file |
| Community Hospital Grand Junction · Grand Junction, CO ASSAY OF FREE THYROXINE | $13.44 | $24.00 | Mar 13, 2026 source file |
| East Morgan County Hospital Brush · Fort Morgan, CO LAB THYROXINE T4 FREE | $17.25 | $28.00 | Sep 23, 2026 source file |
| Denver Health and Hospital Authority Denver · Denver-Aurora-Centennial, CO HC THYROXINE FREE STANDOUT | $18.41 | $52.58 | Apr 30, 2026 source file |
| Grand River Medical Center Rifle · Rifle, CO ASSAY OF FREE THYROXINE | $25.00 | $50.00 | Feb 20, 2026 source file |
| Lincoln Health Hugo · Hugo, CO Free t4 level | $32.00 | $32.00 | Jun 4, 2026 source file |
| Wray Community District Hospital Wray · Wray, CO FreeT4 PSPC | $42.38 | $56.51 | Mar 1, 2024 source file |
| Childrens Hospital Colorado Aurora · Denver-Aurora-Centennial, CO HB=CSHB T4 FREE BY DIALYSIS | $48.10 | $74.00 | Apr 17, 2026 source file |
| National Jewish Health Denver · Denver-Aurora-Centennial, CO HC FREE THYROXINE | $49.00 | $70.00 | Mar 1, 2026 source file |
| Family Health West Hospital Fruita · Grand Junction, CO HC FREE THYROXINE | $52.50 | $75.00 | Apr 1, 2026 source file |
| Delta County Memorial Hospital Delta · Delta, CO T4 FREE BY DIALYSIS | $52.92 | $132.30 | Aug 24, 2026 source file |
| Yuma Disctrict Hospital Yuma · Yuma, CO T4, Free QST | $72.00 | $96.00 | May 28, 2026 source file |
| San Luis Valley Health Alamosa · Alamosa, CO ASSAY OF FREE THYROXINE | $75.35 | $137.00 | Mar 26, 2026 source file |
| San Luis Valley Health Conejos County Hospital La Jara · Alamosa, CO ASSAY OF FREE THYROXINE | $75.35 | $137.00 | Mar 26, 2026 source file |
| Delta Health Hospital Delta · Delta, CO FREE T4 THYROXINE | $75.60 | $126.00 | Apr 2, 2026 source file |
| Middle Park Health - Fraser Fraser · Fraser, CO HC THYROXINE FREE (FT4) | $77.79 | $97.23 | Apr 28, 2026 source file |
| Middle Park Medical Center Kremmling · Kremmling, CO HC THYROXINE FREE (FT4) | $77.79 | $97.23 | Apr 27, 2026 source file |
| Middle Park Medical Center-Granby Granby · Granby, CO HC THYROXINE FREE (FT4) | $77.79 | $97.23 | Apr 27, 2026 source file |
| Weisbrod Memorial County Hospital Luther Eads · Luther Eads, CO Thyroxine (thyroid chemical), free | $95.40 | $159.00 | Jun 29, 2026 source file |
| Salida Hospital District Salida · Salida, CO Thyroxine (thyroid chemical), free | $99.45 | $117.00 | Jul 10, 2026 source file |
| Vail Health Hospital Vail · Edwards, CO T4 Free-ARUP | $101.25 | $135.00 | Aug 5, 2026 source file |
| Haxtun Hospital District Haxtun · Haxtun, CO Hrt T4 Free | $103.00 | $137.00 | — source file |
| Pagosa Springs Medical Center Pagosa Springs · Pagosa Springs, CO Thyroxine; free | $105.04 | $131.30 | Sep 24, 2026 source file |
| Gunnison Valley Hospital Gunnison · Gunnison, CO Thyroxine (thyroid chemical), free | $124.10 | $146.00 | Jul 10, 2026 source file |
| Boulder Community Health Boulder · Boulder, CO HC ASSAY OF FREE THYROXINE - T4 FREE - POC | $132.50 | $265.00 | Sep 16, 2026 source file |
| Animas Surgical Hospital Durango · Durango, CO THYROXINE (THYROID CHEMICAL); FREE | $139.00 | $139.00 | Mar 16, 2026 source file |
| Aspen Valley Hospital District Aspen · Rifle, CO HC Assay of Free Thyroxine - T4 Free | $141.00 | $141.00 | Mar 26, 2026 source file |
| AdventHealth Avista Louisville · Boulder, CO HC T4 FREE - THYROXINE FREE | $158.93 | $158.93 | Apr 1, 2026 source file |
| AdventHealth Castle Rock Castle Rock · Denver-Aurora-Centennial, CO HC T4 FREE BY DIALYSIS - ARUP | $158.93 | $158.93 | Apr 1, 2026 source file |
| AdventHealth Littleton Littleton · Denver-Aurora-Centennial, CO HC T4 FREE - THYROXINE FREE | $158.93 | $158.93 | Apr 1, 2026 source file |
| AdventHealth Parker Parker · Denver-Aurora-Centennial, CO HC T4 FREE | $158.93 | $158.93 | Apr 1, 2026 source file |
| AdventHealth Porter Denver · Denver-Aurora-Centennial, CO HC T4 FREE - THYROXINE FREE | $158.93 | $158.93 | Apr 1, 2026 source file |
| Spalding at Psl Denver · Denver-Aurora-Centennial, CO Thyroxine; free | $205.80 | $205.80 | Sep 1, 2026 source file |
| Craig Hospital Englewood · Denver-Aurora-Centennial, CO HC THYROXINE FREE (FT4) | $335.95 | $881.75 | Jun 25, 2026 source file |
| HCA Healthone Swedish Englewood · Denver-Aurora-Centennial, CO T4 FREE | $617.86 | $617.86 | Sep 1, 2026 source file |
| HCA Healthone Belmar ER Lakewood · Denver-Aurora-Centennial, CO T4 FREE | $626.36 | $626.36 | Sep 1, 2026 source file |
| HCA Healthone Southwest ER Littleton · Denver-Aurora-Centennial, CO T4 FREE | $626.36 | $626.36 | Sep 1, 2026 source file |
| HCA Healthone Central Park ER Denver · Denver-Aurora-Centennial, CO T4 FREE | $664.00 | $664.00 | Sep 1, 2026 source file |
| HCA Healthone Rose Denver · Denver-Aurora-Centennial, CO Thyroxine; free | $664.00 | $664.00 | Sep 1, 2026 source file |
| HCA Healthone Mountain Ridge Thornton · Denver-Aurora-Centennial, CO T4 FREE | $785.82 | $785.82 | Sep 1, 2026 source file |
| HCA Healthone Northeast ER Thornton · Denver-Aurora-Centennial, CO T4 FREE | $785.82 | $785.82 | Sep 1, 2026 source file |
| HCA Healthone Sky Ridge Lone Tree · Denver-Aurora-Centennial, CO T4 FREE | $902.72 | $902.72 | Sep 1, 2026 source file |
| HCA Healthone South Parker ER Parker · Denver-Aurora-Centennial, CO Thyroxine; free | $902.72 | $902.72 | Sep 1, 2026 source file |
| Centennial Hospital A Campus of Tmca Englewood · Denver-Aurora-Centennial, CO Thyroxine; free | $1,094.46 | $1,094.46 | Sep 1, 2026 source file |
| HCA Healthone Aurora Aurora · Denver-Aurora-Centennial, CO Thyroxine; free | $1,094.46 | $1,094.46 | Sep 1, 2026 source file |
| HCA Healthone Presbyterian St Lukes Denver · Denver-Aurora-Centennial, CO Thyroxine; free | $1,308.50 | $1,308.50 | Sep 1, 2026 source file |
Hospital The hospital that published the price, its city and the line exactly as written in its price file.
Cash price The hospital's own price for a patient paying without insurance (“discounted cash” in its price file). Hospitals must publish it under federal law, 45 CFR 180.50. Call to confirm it before booking. More
List price The hospital's full chargemaster price (“gross charge”) before any discount. Almost nobody pays it; the gap to the cash price shows what the self-pay discount is worth. More
File date When the hospital last updated its price file, as the file says itself. A dash means the file gives no date.
No cash discount This line's cash price equals the hospital's full list price. Many hospitals still reduce bills for uninsured patients: ask the billing office for its self-pay discount in writing. More
By metro area
Each metro page compares every listing, including prices for both sides of the body.
| Metro area | Hospitals | Lowest | Median |
|---|---|---|---|
| Denver-Aurora-Centennial, CO | 21 | $18.41 | $626.36 |
| Alamosa, CO | 2 | $75.35 | $75.35 |
| Boulder, CO | 2 | $132.50 | $145.72 |
| Delta, CO | 2 | $52.92 | $64.26 |
| Grand Junction, CO | 2 | $13.44 | $32.97 |
| Rifle, CO | 2 | $25.00 | $83.00 |
| Durango, CO | 1 | $139.00 | $139.00 |
| Edwards, CO | 1 | $101.25 | $101.25 |
| Fraser, CO | 1 | $77.79 | $77.79 |
| Fort Collins-Loveland, CO | 1 | $6.36 | $6.36 |
| Fort Morgan, CO | 1 | $17.25 | $17.25 |
| Granby, CO | 1 | $77.79 | $77.79 |
| Gunnison, CO | 1 | $124.10 | $124.10 |
| Greeley, CO | 1 | $6.44 | $6.44 |
| Haxtun, CO | 1 | $103.00 | $103.00 |
| Hugo, CO | 1 | $32.00 | $32.00 |
| Kremmling, CO | 1 | $77.79 | $77.79 |
| Luther Eads, CO | 1 | $95.40 | $95.40 |
| Pagosa Springs, CO | 1 | $105.04 | $105.04 |
| Salida, CO | 1 | $99.45 | $99.45 |
| Sterling, CO | 1 | $9.24 | $9.24 |
| Wray, CO | 1 | $42.38 | $42.38 |
| Yuma, CO | 1 | $72.00 | $72.00 |
Market A metro area (as the Census Bureau defines it) or, outside metro areas, a town. Each links to every hospital price there.
Hospitals How many hospitals publish a cash price for this code here. Each hospital counts once, at its lowest outpatient cash price.
Lowest The lowest cash price among those hospitals.
Median The middle cash price: half of the hospitals charge less, half charge more. One price per hospital. More
What free T4 test is, what the price covers and why prices differ: Free T4 test explained.
Free T4 (free thyroxine) thyroid blood test in other states
- Alabama$60.96
- Alaska$137.40
- Arizona$53.86
- Arkansas$32.00
- California$68.12
- Connecticut$61.70
- Delaware$157.92
- District of Columbia$102.57, 3 hospitals
- Florida$84.03
- Georgia$75.49
- Hawaii$79.10
- Idaho$49.00
- Illinois$115.77
- Indiana$81.00
- Iowa$65.60
- Kansas$62.42
- Kentucky$74.62
- Louisiana$34.97
- Maine$57.72
- Maryland$43.12
- Massachusetts$66.00
- Michigan$31.00
- Minnesota$69.26
- Mississippi$35.42
- Missouri$77.18
- Montana$75.33
- Nebraska$90.88
- Nevada$101.04
- New Hampshire$98.25
- New Jersey$10.37
- New Mexico$123.20
- New York$48.00
- North Carolina$64.50
- North Dakota$62.63
- Ohio$42.49
- Oklahoma$61.33
- Oregon$45.75
- Pennsylvania$60.00
- Puerto Rico$44.50
- Rhode Island$72.00
- South Carolina$100.80
- South Dakota$95.00
- Tennessee$33.64
- Texas$76.83
- Utah$151.86
- Vermont$102.14
- Virginia$77.50
- Washington$69.16
- West Virginia$58.00
- Wisconsin$80.75
- Wyoming$77.28
Median cash price across the state's hospitals.