Free T4 test cost in Dallas, TX
In Dallas-Fort Worth-Arlington, TX, 42 hospitals list a cash price for Free T4 (free thyroxine) thyroid blood test: from $12.75 to $284.70, with a median of $213.50. The lowest listed price is at The University of Texas Southwestern Medical Center at Dallas — $200.75 less than the median here. Across Texas, the median is $39.51 at 101 hospitals.
Cash prices at 42 facilities across 22 cities for code 84439, as an outpatient — the setting a self-pay patient normally buys. Collected Sep 23, 2026; the hospital files themselves were last updated between Jan 31, 2025 and Jun 29, 2026.
Lowest$12.75The University of Texas Southwestern Medical Center at Dallas
Median$213.50half pay less
Highest$284.70in this market
Difference22.3×highest vs lowest
Where each hospital's price falls
Each dot is one hospital's cash price on a scale from the lowest to the highest in Dallas-Fort Worth-Arlington, TX.
median
Lowest $12.75Highest $296.10
Hospitals, cheapest first
| Hospital | Cash price | List price | Insurers pay | Off list | File date |
|---|---|---|---|---|---|
| The University of Texas Southwestern Medical Center at Dallas lowest Dallas, TX ASSAY OF FREE THYROXINE | $12.75 | $17.00 | $5.00–$31.45 | 25% | Mar 10, 2026 source file |
| The University of Texas Southwestern Medical Center at Dallas Dallas, TX T4 FREE | $26.25 | $35.00 | $5.00–$31.50 | 25% | Mar 10, 2026 source file |
| Baylor Scott & White Medical Center - Plano Plano, TX HC REF MAYO FFT4F T4, FREE, DIRECT DIALYSIS | $33.00 | $55.00 | $7.58–$46.54 | 40% | Jun 29, 2026 source file |
| Baylor Scott & White Heart and Vascular Hospital - Waxahachie Waxahachie, TX HC REF MAYO FFT4F T4, FREE, DIRECT DIALYSIS | $33.00 | $55.00 | $8.57–$46.54 | 40% | Jun 29, 2026 source file |
| Baylor Scott & White Medical Center - Lake Pointe Rowlett, TX HC REF MAYO FFT4F T4, FREE, DIRECT DIALYSIS | $33.00 | $55.00 | $7.58–$69.36 | 40% | Jun 29, 2026 source file |
| Baylor Scott & White Medical Center - Centennial Frisco, TX HC REF MAYO FFT4F T4, FREE, DIRECT DIALYSIS | $33.00 | $55.00 | $7.58–$69.36 | 40% | Jun 29, 2026 source file |
| Baylor Scott & White Heart and Vascular Hospital - Dallas Dallas, TX HC REF MAYO FFT4F T4, FREE, DIRECT DIALYSIS | $33.00 | $55.00 | $7.58–$46.54 | 40% | Jun 29, 2026 source file |
| Baylor Scott & White Medical Center - Irving Irving, TX HC REF MAYO FFT4F T4, FREE, DIRECT DIALYSIS | $33.00 | $55.00 | $7.58–$46.54 | 40% | Jun 29, 2026 source file |
| Baylor Scott & White Medical Center at Waxahachie Waxahachie, TX HC REF MAYO FFT4F T4, FREE, DIRECT DIALYSIS | $33.00 | $55.00 | $7.58–$46.54 | 40% | Jun 29, 2026 source file |
| Baylor University Medical Center Dallas, TX HC REF MAYO FFT4F T4, FREE, DIRECT DIALYSIS | $33.00 | $55.00 | $7.58–$46.54 | 40% | Jun 29, 2026 source file |
| Baylor Scott & White Medical Center - Grapevine Grapevine, TX HC REF MAYO FFT4F T4, FREE, DIRECT DIALYSIS | $33.00 | $55.00 | $7.58–$46.54 | 40% | Jun 29, 2026 source file |
| Baylor Scott & White Medical Center - McKinney McKinney, TX HC REF MAYO FFT4F T4, FREE, DIRECT DIALYSIS | $33.00 | $55.00 | $7.58–$46.54 | 40% | Jun 29, 2026 source file |
| Baylor Scott & White Medical Center - Frisco at PGA Parkway Frisco, TX HC REF MAYO FFT4F T4, FREE, DIRECT DIALYSIS | $33.00 | $55.00 | $7.58–$46.54 | 40% | Jun 29, 2026 source file |
| Baylor Scott & White All Saints Medical Center - Fort Worth Fort Worth, TX HC REF MAYO FFT4F T4, FREE, DIRECT DIALYSIS | $33.00 | $55.00 | $7.58–$46.54 | 40% | Jun 29, 2026 source file |
| Baylor Scott & White The Heart Hospital - Plano Plano, TX HC REF MAYO FFT4F T4, FREE, DIRECT DIALYSIS | $33.00 | $55.00 | $7.58–$46.54 | 40% | Jun 29, 2026 source file |
| Baylor Scott & White The Heart Hospital - McKinney McKinney, TX HC REF MAYO FFT4F T4, FREE, DIRECT DIALYSIS | $33.00 | $55.00 | $8.11–$46.54 | 40% | Jun 29, 2026 source file |
| Baylor Scott & White The Heart Hospital - Denton Denton, TX HC REF MAYO FFT4F T4, FREE, DIRECT DIALYSIS | $33.00 | $55.00 | $7.58–$46.54 | 40% | Jun 29, 2026 source file |
| Baylor Scott & White Medical Center - Irving Irving, TX HC REF ARUP 0093244 FREE T4 BY EQUIL DIALYSIS - TMS | $40.50 | $67.50 | $7.58–$50.62 | 40% | Jun 29, 2026 source file |
| Baylor Scott & White The Heart Hospital - McKinney McKinney, TX HC REF ARUP 0093244 FREE T4 BY EQUIL DIALYSIS - TMS | $40.50 | $67.50 | $8.11–$50.62 | 40% | Jun 29, 2026 source file |
| Baylor Scott & White Medical Center at Waxahachie Waxahachie, TX HC REF ARUP 0093244 FREE T4 BY EQUIL DIALYSIS - TMS | $40.50 | $67.50 | $7.58–$50.62 | 40% | Jun 29, 2026 source file |
| Baylor Scott & White All Saints Medical Center - Fort Worth Fort Worth, TX HC REF ARUP 0093244 FREE T4 BY EQUIL DIALYSIS - TMS | $40.50 | $67.50 | $7.58–$50.62 | 40% | Jun 29, 2026 source file |
| Baylor University Medical Center Dallas, TX HC REF ARUP 0093244 FREE T4 BY EQUIL DIALYSIS - TMS | $40.50 | $67.50 | $7.58–$50.62 | 40% | Jun 29, 2026 source file |
| Baylor Scott & White Medical Center - Lake Pointe Rowlett, TX HC REF ARUP 0093244 FREE T4 BY EQUIL DIALYSIS - TMS | $40.50 | $67.50 | $7.58–$69.36 | 40% | Jun 29, 2026 source file |
| Baylor Scott & White Medical Center - Grapevine Grapevine, TX HC REF ARUP 0093244 FREE T4 BY EQUIL DIALYSIS - TMS | $40.50 | $67.50 | $7.58–$50.62 | 40% | Jun 29, 2026 source file |
| Baylor Scott & White The Heart Hospital - Plano Plano, TX HC REF ARUP 0093244 FREE T4 BY EQUIL DIALYSIS - TMS | $40.50 | $67.50 | $7.58–$50.62 | 40% | Jun 29, 2026 source file |
| Baylor Scott & White Medical Center - McKinney McKinney, TX HC REF ARUP 0093244 FREE T4 BY EQUIL DIALYSIS - TMS | $40.50 | $67.50 | $7.58–$50.62 | 40% | Jun 29, 2026 source file |
| Baylor Scott & White The Heart Hospital - Denton Denton, TX HC REF ARUP 0093244 FREE T4 BY EQUIL DIALYSIS - TMS | $40.50 | $67.50 | $7.58–$50.62 | 40% | Jun 29, 2026 source file |
| Baylor Scott & White Heart and Vascular Hospital - Dallas Dallas, TX HC REF ARUP 0093244 FREE T4 BY EQUIL DIALYSIS - TMS | $40.50 | $67.50 | $7.58–$50.62 | 40% | Jun 29, 2026 source file |
| Baylor Scott & White Medical Center - Frisco at PGA Parkway Frisco, TX HC REF ARUP 0093244 FREE T4 BY EQUIL DIALYSIS - TMS | $40.50 | $67.50 | $7.58–$50.62 | 40% | Jun 29, 2026 source file |
| Baylor Scott & White Medical Center - Plano Plano, TX HC REF ARUP 0093244 FREE T4 BY EQUIL DIALYSIS - TMS | $40.50 | $67.50 | $7.58–$50.62 | 40% | Jun 29, 2026 source file |
| Baylor Scott & White Medical Center - Centennial Frisco, TX HC REF ARUP 0093244 FREE T4 BY EQUIL DIALYSIS - TMS | $40.50 | $67.50 | $7.58–$69.36 | 40% | Jun 29, 2026 source file |
| Baylor Scott & White Heart and Vascular Hospital - Waxahachie Waxahachie, TX HC REF ARUP 0093244 FREE T4 BY EQUIL DIALYSIS - TMS | $40.50 | $67.50 | $8.57–$50.62 | 40% | Jun 29, 2026 source file |
| The University of Texas Southwestern Medical Center at Dallas Dallas, TX FREE T4 ESTIMATE | $47.25 | $63.00 | $5.00–$56.70 | 25% | Mar 10, 2026 source file |
| The University of Texas Southwestern Medical Center at Dallas Dallas, TX HCHG THYROXINE (T-4) FREE | $68.50 | $137.00 | $7.58–$120.56 | 50% | Mar 10, 2026 source file |
| Frisco Medical Center LLP Frisco, TX FREE THYROXINE | $84.14 | $140.24 | $2,884.00 | 40% | Jan 31, 2025 source file |
| Reunion Rehabilitation Hospital Arlington, LLC Arlington, TX Assay of thyroid (t4) | $103.02 | $103.02 | — | — | Apr 1, 2026 source file |
| Reunion Rehabilitation Hospital Plano, LLC Plano, TX Assay of thyroid (t4) | $103.02 | $103.02 | — | — | Apr 1, 2026 source file |
| Baylor Scott & White The Heart Hospital - Plano Plano, TX HC THYROXINE (T4), FREE BY DIALYSIS | $128.73 | $214.55 | $7.58–$160.91 | 40% | Jun 29, 2026 source file |
| Baylor Scott & White All Saints Medical Center - Fort Worth Fort Worth, TX HC THYROXINE (T4), FREE BY DIALYSIS | $128.73 | $214.55 | $7.58–$160.91 | 40% | Jun 29, 2026 source file |
| Baylor Scott & White All Saints Medical Center - Fort Worth Fort Worth, TX HC THYROXINE (T4), FREE | $128.73 | $214.55 | $7.58–$160.91 | 40% | Jun 29, 2026 source file |
| Baylor Scott & White All Saints Medical Center - Fort Worth Fort Worth, TX HC THYROXINE - FREE | $128.73 | $214.55 | $7.58–$160.91 | 40% | Jun 29, 2026 source file |
| Baylor Scott & White Medical Center - Frisco at PGA Parkway Frisco, TX HC THYROXINE (T4), FREE BY DIALYSIS | $128.73 | $214.55 | $7.58–$160.91 | 40% | Jun 29, 2026 source file |
| Baylor Scott & White Medical Center - Frisco at PGA Parkway Frisco, TX HC THYROXINE (T4), FREE | $128.73 | $214.55 | $7.58–$160.91 | 40% | Jun 29, 2026 source file |
| Baylor Scott & White Medical Center - Frisco at PGA Parkway Frisco, TX HC THYROXINE - FREE | $128.73 | $214.55 | $7.58–$160.91 | 40% | Jun 29, 2026 source file |
| Baylor Scott & White Medical Center - McKinney McKinney, TX HC THYROXINE (T4), FREE BY DIALYSIS | $128.73 | $214.55 | $7.58–$160.91 | 40% | Jun 29, 2026 source file |
| Baylor Scott & White Medical Center - McKinney McKinney, TX HC THYROXINE (T4), FREE | $128.73 | $214.55 | $7.58–$160.91 | 40% | Jun 29, 2026 source file |
| Baylor Scott & White Medical Center - McKinney McKinney, TX HC THYROXINE - FREE | $128.73 | $214.55 | $7.58–$160.91 | 40% | Jun 29, 2026 source file |
| Baylor Scott & White Medical Center - Grapevine Grapevine, TX HC THYROXINE (T4), FREE BY DIALYSIS | $128.73 | $214.55 | $7.58–$160.91 | 40% | Jun 29, 2026 source file |
| Baylor Scott & White Medical Center - Grapevine Grapevine, TX HC THYROXINE (T4), FREE | $128.73 | $214.55 | $7.58–$160.91 | 40% | Jun 29, 2026 source file |
| Baylor Scott & White Medical Center - Grapevine Grapevine, TX HC THYROXINE - FREE | $128.73 | $214.55 | $7.58–$160.91 | 40% | Jun 29, 2026 source file |
| Baylor University Medical Center Dallas, TX HC THYROXINE (T4), FREE BY DIALYSIS | $128.73 | $214.55 | $7.58–$160.91 | 40% | Jun 29, 2026 source file |
| Baylor University Medical Center Dallas, TX HC THYROXINE (T4), FREE | $128.73 | $214.55 | $7.58–$160.91 | 40% | Jun 29, 2026 source file |
| Baylor University Medical Center Dallas, TX HC THYROXINE - FREE | $128.73 | $214.55 | $7.58–$160.91 | 40% | Jun 29, 2026 source file |
| Baylor Scott & White Medical Center at Waxahachie Waxahachie, TX HC THYROXINE (T4), FREE BY DIALYSIS | $128.73 | $214.55 | $7.58–$160.91 | 40% | Jun 29, 2026 source file |
| Baylor Scott & White Medical Center at Waxahachie Waxahachie, TX HC THYROXINE (T4), FREE | $128.73 | $214.55 | $7.58–$160.91 | 40% | Jun 29, 2026 source file |
| Baylor Scott & White Medical Center at Waxahachie Waxahachie, TX HC THYROXINE - FREE | $128.73 | $214.55 | $7.58–$160.91 | 40% | Jun 29, 2026 source file |
| Baylor Scott & White Medical Center - Irving Irving, TX HC THYROXINE (T4), FREE BY DIALYSIS | $128.73 | $214.55 | $7.58–$160.91 | 40% | Jun 29, 2026 source file |
| Baylor Scott & White Medical Center - Irving Irving, TX HC THYROXINE (T4), FREE | $128.73 | $214.55 | $7.58–$160.91 | 40% | Jun 29, 2026 source file |
| Baylor Scott & White Medical Center - Irving Irving, TX HC THYROXINE - FREE | $128.73 | $214.55 | $7.58–$160.91 | 40% | Jun 29, 2026 source file |
| Baylor Scott & White Heart and Vascular Hospital - Dallas Dallas, TX HC THYROXINE (T4), FREE BY DIALYSIS | $128.73 | $214.55 | $7.58–$160.91 | 40% | Jun 29, 2026 source file |
| Baylor Scott & White Heart and Vascular Hospital - Dallas Dallas, TX HC THYROXINE (T4), FREE | $128.73 | $214.55 | $7.58–$160.91 | 40% | Jun 29, 2026 source file |
| Baylor Scott & White Heart and Vascular Hospital - Dallas Dallas, TX HC THYROXINE - FREE | $128.73 | $214.55 | $7.58–$160.91 | 40% | Jun 29, 2026 source file |
| Baylor Scott & White Heart and Vascular Hospital - Waxahachie Waxahachie, TX HC THYROXINE (T4), FREE BY DIALYSIS | $128.73 | $214.55 | $8.57–$160.91 | 40% | Jun 29, 2026 source file |
| Baylor Scott & White Heart and Vascular Hospital - Waxahachie Waxahachie, TX HC THYROXINE (T4), FREE | $128.73 | $214.55 | $8.57–$160.91 | 40% | Jun 29, 2026 source file |
| Baylor Scott & White Heart and Vascular Hospital - Waxahachie Waxahachie, TX HC THYROXINE - FREE | $128.73 | $214.55 | $8.57–$160.91 | 40% | Jun 29, 2026 source file |
| Baylor Scott & White Medical Center - Plano Plano, TX HC THYROXINE (T4), FREE BY DIALYSIS | $128.73 | $214.55 | $7.58–$160.91 | 40% | Jun 29, 2026 source file |
| Baylor Scott & White Medical Center - Plano Plano, TX HC THYROXINE (T4), FREE | $128.73 | $214.55 | $7.58–$160.91 | 40% | Jun 29, 2026 source file |
| Baylor Scott & White Medical Center - Plano Plano, TX HC THYROXINE - FREE | $128.73 | $214.55 | $7.58–$160.91 | 40% | Jun 29, 2026 source file |
| Baylor Scott & White Medical Center - Centennial Frisco, TX HC THYROXINE (T4), FREE BY DIALYSIS | $128.73 | $214.55 | $7.58–$160.91 | 40% | Jun 29, 2026 source file |
| Baylor Scott & White Medical Center - Centennial Frisco, TX HC THYROXINE (T4), FREE | $128.73 | $214.55 | $7.58–$160.91 | 40% | Jun 29, 2026 source file |
| Baylor Scott & White Medical Center - Centennial Frisco, TX HC THYROXINE - FREE | $128.73 | $214.55 | $7.58–$160.91 | 40% | Jun 29, 2026 source file |
| Baylor Scott & White Medical Center - Lake Pointe Rowlett, TX HC THYROXINE (T4), FREE BY DIALYSIS | $128.73 | $214.55 | $7.58–$160.91 | 40% | Jun 29, 2026 source file |
| Baylor Scott & White Medical Center - Lake Pointe Rowlett, TX HC THYROXINE (T4), FREE | $128.73 | $214.55 | $7.58–$160.91 | 40% | Jun 29, 2026 source file |
| Baylor Scott & White Medical Center - Lake Pointe Rowlett, TX HC THYROXINE - FREE | $128.73 | $214.55 | $7.58–$160.91 | 40% | Jun 29, 2026 source file |
| Baylor Scott & White The Heart Hospital - Denton Denton, TX HC THYROXINE (T4), FREE BY DIALYSIS | $128.73 | $214.55 | $7.58–$160.91 | 40% | Jun 29, 2026 source file |
| Baylor Scott & White The Heart Hospital - Denton Denton, TX HC THYROXINE (T4), FREE | $128.73 | $214.55 | $7.58–$160.91 | 40% | Jun 29, 2026 source file |
| Baylor Scott & White The Heart Hospital - Denton Denton, TX HC THYROXINE - FREE | $128.73 | $214.55 | $7.58–$160.91 | 40% | Jun 29, 2026 source file |
| Baylor Scott & White The Heart Hospital - McKinney McKinney, TX HC THYROXINE (T4), FREE BY DIALYSIS | $128.73 | $214.55 | $8.11–$160.91 | 40% | Jun 29, 2026 source file |
| Baylor Scott & White The Heart Hospital - McKinney McKinney, TX HC THYROXINE (T4), FREE | $128.73 | $214.55 | $8.11–$160.91 | 40% | Jun 29, 2026 source file |
| Baylor Scott & White The Heart Hospital - McKinney McKinney, TX HC THYROXINE - FREE | $128.73 | $214.55 | $8.11–$160.91 | 40% | Jun 29, 2026 source file |
| Baylor Scott & White The Heart Hospital - Plano Plano, TX HC THYROXINE (T4), FREE | $128.73 | $214.55 | $7.58–$160.91 | 40% | Jun 29, 2026 source file |
| Baylor Scott & White The Heart Hospital - Plano Plano, TX HC THYROXINE - FREE | $128.73 | $214.55 | $7.58–$160.91 | 40% | Jun 29, 2026 source file |
| MSH Partners, LLC Dallas, TX Thyroxine Free | $150.60 | $251.00 | $0.47–$8,427.00 | 40% | Apr 14, 2026 source file |
| MSH Partners, LLC Dallas, TX Throxine Free | $152.40 | $254.00 | $0.47–$8,427.00 | 40% | Apr 14, 2026 source file |
| Texas Regional Medical Center, LLC Sunnyvale, TX Thyroxine Free | $213.00 | $355.00 | $57.53–$121.61 | 40% | Apr 1, 2026 source file |
| Texas Regional Medical Center, LLC Sunnyvale, TX Throxine Free | $213.00 | $355.00 | $57.53–$121.61 | 40% | Apr 1, 2026 source file |
| Texas Health Hospital Mansfield Mansfield, TX HC T4 FREE BY DIALYSIS - ARUP | $214.00 | $214.00 | — | — | Apr 1, 2026 source file |
| Texas Health Huguley Hospital Fort Worth South Burleson, TX HC T4 FREE BY DIALYSIS - ARUP | $214.00 | $214.00 | — | — | Apr 1, 2026 source file |
| Texas Health Huguley Hospital Fort Worth South Burleson, TX HC T4 FREE - THYROXINE FREE | $246.99 | $246.99 | — | — | Apr 1, 2026 source file |
| Texas Health Hospital Mansfield Mansfield, TX HC T4 FREE | $246.99 | $246.99 | — | — | Apr 1, 2026 source file |
| Texas Health Hospital Mansfield Mansfield, TX HC T4 FREE - THYROXINE FREE | $246.99 | $246.99 | — | — | Apr 1, 2026 source file |
| Texas Health Hospital Mansfield Mansfield, TX HC T4 FREE REFLEX FROM TSH CASCADE | $246.99 | $246.99 | — | — | Apr 1, 2026 source file |
| Texas Health Harris Methodist Hospital HurstEulessBedford Bedford, TX THYROXINE FREE (FT4) | $284.70 | $474.50 | $7.58–$446.50 | 40% | Apr 21, 2026 source file |
| AMH Cath Labs LLC Arlington, TX THYROXINE FREE (FT4) | $284.70 | $474.50 | $7.58–$446.50 | 40% | Apr 21, 2026 source file |
| Texas Health Harris Methodist Hospital Azle Azle, TX THYROXINE FREE (FT4) | $284.70 | $474.50 | $7.58–$446.50 | 40% | Apr 21, 2026 source file |
| Texas Health Arlington Memorial Hospital Arlington, TX THYROXINE FREE (FT4) | $284.70 | $474.50 | $7.58–$446.50 | 40% | Apr 21, 2026 source file |
| Texas Health Hospital Frisco Frisco, TX THYROXINE FREE (FT4) | $284.70 | $474.50 | $7.58–$446.50 | 40% | Apr 21, 2026 source file |
| Texas Health Presbyterian Hospital Denton Denton, TX THYROXINE FREE (FT4) | $284.70 | $474.50 | $7.58–$446.50 | 40% | Apr 21, 2026 source file |
| Texas Health Specialty Hospital Fort Worth Fort Worth, TX THYROXINE FREE (FT4) | $284.70 | $474.50 | — | 40% | Apr 21, 2026 source file |
| Southlake Specialty Hospital LLC Southlake, TX THYROXINE FREE (FT4) | $284.70 | $474.50 | $7.58–$446.50 | 40% | Apr 21, 2026 source file |
| Texas Health Presbyterian Hospital Dallas Dallas, TX THYROXINE FREE (FT4) | $284.70 | $474.50 | $7.58–$446.50 | 40% | Apr 21, 2026 source file |
| Rockwall Regional Hospital LLC Rockwall, TX THYROXINE FREE (FT4) | $284.70 | $474.50 | $7.58–$446.50 | 40% | Apr 21, 2026 source file |
| Texas Health Presbyterian Hospital Plano Plano, TX THYROXINE FREE (FT4) | $284.70 | $474.50 | $7.58–$446.50 | 40% | Apr 21, 2026 source file |
| Texas Health Presbyterian Hospital Allen Allen, TX THYROXINE FREE (FT4) | $284.70 | $474.50 | $7.58–$446.50 | 40% | Apr 21, 2026 source file |
| Texas Health Harris Methodist Hospital Cleburne Cleburne, TX THYROXINE FREE (FT4) | $284.70 | $474.50 | $7.58–$446.50 | 40% | Apr 21, 2026 source file |
| Physicians Medical Center LLC Plano, TX THYROXINE FREE (FT4) | $284.70 | $474.50 | $7.58–$446.50 | 40% | Apr 21, 2026 source file |
| Texas Health Presbyterian Hospital Kaufman Kaufman, TX THYROXINE FREE (FT4) | $284.70 | $474.50 | $7.58–$446.50 | 40% | Apr 21, 2026 source file |
| Texas Health Harris Methodist Hospital Fort Worth Fort Worth, TX THYROXINE FREE (FT4) | $284.70 | $474.50 | $7.58–$446.50 | 40% | Apr 21, 2026 source file |
| Flower Mound Hospital Partners LLC Flower Mound, TX THYROXINE FREE (FT4) | $284.70 | $474.50 | $7.58–$446.50 | 40% | Apr 21, 2026 source file |
| Texas Health Harris Methodist Hospital Alliance Fort Worth, TX THYROXINE FREE (FT4) | $284.70 | $474.50 | $7.58–$446.50 | 40% | Apr 21, 2026 source file |
| Texas Health Harris Methodist Hospital Southwest Fort Worth Fort Worth, TX THYROXINE FREE (FT4) | $284.70 | $474.50 | $7.58–$446.50 | 40% | Apr 21, 2026 source file |
| Texas Health Hospital Frisco Frisco, TX T4 FREE CASCADE | $296.10 | $493.50 | $7.58–$464.38 | 40% | Apr 21, 2026 source file |
| Texas Health Harris Methodist Hospital HurstEulessBedford Bedford, TX T4 FREE CASCADE | $296.10 | $493.50 | $7.58–$464.38 | 40% | Apr 21, 2026 source file |
| Southlake Specialty Hospital LLC Southlake, TX T4 FREE CASCADE | $296.10 | $493.50 | $7.58–$464.38 | 40% | Apr 21, 2026 source file |
| Texas Health Harris Methodist Hospital Alliance Fort Worth, TX T4 FREE CASCADE | $296.10 | $493.50 | $7.58–$464.38 | 40% | Apr 21, 2026 source file |
Outpatient: lowest $12.75, median $213.50, highest $284.70 — a 22.3× difference within the same market.
As an inpatient, the same code is billed by 41 facilities here, median $214.00. Inpatient and outpatient prices are not comparable and are kept on separate pages: the inpatient charge covers admission, not the same purchase.
Cash or insurance?
At 36 of 37 hospitals that publish insurer rates for this code here, the cash price is below the highest rate a health plan has negotiated, and at 1 it is below every plan's rate. If you have insurance but have not met your deductible, you usually pay your plan's negotiated rate, which falls somewhere in the "Insurers pay" column. Paying cash can cost less, but a cash payment usually does not count toward your deductible. Ask the hospital for both numbers before you book.
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.