Free T4 test cost in Houston, TX — inpatient
In Houston-Pasadena-The Woodlands, TX, 12 hospitals list a cash price for free T4 (free thyroxine) thyroid blood test as an inpatient: from $9.02 to $112.56, with a median of $10.50. The lowest listed price is at Harris Health and 1 other hospital — $1.48 less than the median here. Across Texas, the median is $39.51 at 101 hospitals.
Cash prices at 12 facilities across 8 cities for code 84439, as an inpatient (admitted to hospital) . Collected Sep 23, 2026; the hospital files themselves were last updated between Mar 5, 2026 and Apr 1, 2026.
Where each hospital's price falls
Each dot is one hospital's cash price on a scale from the lowest to the highest in Houston-Pasadena-The Woodlands, TX.
Hospitals, cheapest first
| Hospital | Cash price | List price | Insurers pay | Off list | File date |
|---|---|---|---|---|---|
| Harris Health lowest Taub Loop Houston, TX · (713) 873-2000 FREE T4 BY DIALYSIS | $9.02 | $344.00 | $7.58–$223.60 | 97% | — source file |
| Harris Health lowest Houston, TX FREE T4 | $9.02 | $121.00 | $7.58–$78.65 | 93% | — source file |
| Harris Health lowest Houston, TX FREE T4 BY DIALYSIS | $9.02 | $344.00 | $7.58–$223.60 | 97% | — source file |
| Harris Health lowest Houston, TX THYROXINE (T4) FREE DIRECT(LABCORP) LAB5040 | $9.02 | $9.00 | $4.50–$24.49 | — | — source file |
| Harris Health lowest Taub Loop Houston, TX · (713) 873-2000 THYROXINE (T4) FREE DIRECT(LABCORP) LAB5040 | $9.02 | $9.00 | $4.50–$24.49 | — | — source file |
| Harris Health lowest Taub Loop Houston, TX · (713) 873-2000 FREE T4 | $9.02 | $121.00 | $7.58–$78.65 | 93% | — source file |
| Houston Methodist The Woodlands Hospital The Woodlands, TX · (936) 270-2000 HC T4 FREE DIRECT DIALYSIS | $10.50 | $21.00 | — | 50% | Apr 1, 2026 source file |
| Houston Methodist Baytown Hospital Baytown, TX · (281) 420-8600 HC T4 FREE DIRECT DIALYSIS | $10.50 | $21.00 | — | 50% | Apr 1, 2026 source file |
| Methodist Sugar Land Hospital Sugar Land, TX · (281) 274-8000 HC T4 FREE DIRECT DIALYSIS | $10.50 | $21.00 | — | 50% | Apr 1, 2026 source file |
| Methodist West Houston Hospital Houston, TX · (832) 522-1000 HC T4 FREE DIRECT DIALYSIS | $10.50 | $21.00 | — | 50% | Apr 1, 2026 source file |
| Houston Methodist Cypress Hospital Cypress, TX · (346) 618-1506 HC T4 FREE DIRECT DIALYSIS | $10.50 | $21.00 | — | 50% | Apr 1, 2026 source file |
| Houston Methodist Continuing Care Hospital Katy, TX HC T4 FREE DIRECT DIALYSIS | $10.50 | $21.00 | — | 50% | Apr 1, 2026 source file |
| Methodist Willowbrook Hospital Houston, TX · (281) 477-1000 HC T4 FREE DIRECT DIALYSIS | $10.50 | $21.00 | — | 50% | Apr 1, 2026 source file |
| Houston Methodist Clear Lake Hospital Nassau Bay, TX · (281) 333-5503 HC T4 FREE DIRECT DIALYSIS | $10.50 | $21.00 | — | 50% | Apr 1, 2026 source file |
| The Methodist Hospital Houston, TX · (713) 790-2221 HC T4 FREE DIRECT DIALYSIS | $10.50 | $21.00 | — | 50% | Apr 1, 2026 source file |
| Texas Children's Hospital Houston, TX · (832) 824-1000 TC FREE T4 BY DIRECT EQUILIBRIUM DIALYSIS | $112.56 | $168.00 | $67.20–$159.60 | 33% | Mar 5, 2026 source file |
| Texas Children's Hospital Houston, TX · (832) 824-1000 TC FREE T4 BY DIRECT EQUILIBRIUM DIALYSIS | $112.56 | $168.00 | $67.20–$159.60 | 33% | Mar 5, 2026 source file |
| Texas Children's Hospital Houston, TX · (832) 824-1000 TC FREE T4 BY DIRECT EQUILIBRIUM DIALYSIS | $112.56 | $168.00 | $67.20–$159.60 | 33% | Mar 5, 2026 source file |
| Texas Children's Hospital Houston, TX · (832) 824-1000 TC T4-FREE (FT4) | $120.60 | $180.00 | $72.00–$171.00 | 33% | Mar 5, 2026 source file |
| Texas Children's Hospital Houston, TX · (832) 824-1000 TC T4-FREE (FT4) | $120.60 | $180.00 | $72.00–$171.00 | 33% | Mar 5, 2026 source file |
| Texas Children's Hospital Houston, TX · (832) 824-1000 TC T4-FREE (FT4) | $120.60 | $180.00 | $72.00–$171.00 | 33% | Mar 5, 2026 source file |
| The Methodist Hospital Houston, TX · (713) 790-2221 HC T4 FREE | $245.50 | $491.00 | — | 50% | Apr 1, 2026 source file |
| Houston Methodist Baytown Hospital Baytown, TX · (281) 420-8600 HC T4 FREE | $368.50 | $737.00 | — | 50% | Apr 1, 2026 source file |
| Methodist Sugar Land Hospital Sugar Land, TX · (281) 274-8000 HC T4 FREE | $368.50 | $737.00 | — | 50% | Apr 1, 2026 source file |
| Houston Methodist The Woodlands Hospital The Woodlands, TX · (936) 270-2000 HC T4 FREE | $368.50 | $737.00 | — | 50% | Apr 1, 2026 source file |
| Houston Methodist Clear Lake Hospital Nassau Bay, TX · (281) 333-5503 HC T4 FREE | $368.50 | $737.00 | — | 50% | Apr 1, 2026 source file |
| Methodist West Houston Hospital Houston, TX · (832) 522-1000 HC T4 FREE | $368.50 | $737.00 | — | 50% | Apr 1, 2026 source file |
| Houston Methodist Continuing Care Hospital Katy, TX HC T4 FREE | $368.50 | $737.00 | — | 50% | Apr 1, 2026 source file |
| Houston Methodist Cypress Hospital Cypress, TX · (346) 618-1506 HC T4 FREE | $368.50 | $737.00 | — | 50% | Apr 1, 2026 source file |
| Methodist Willowbrook Hospital Houston, TX · (281) 477-1000 HC T4 FREE | $368.50 | $737.00 | — | 50% | Apr 1, 2026 source file |
Inpatient: lowest $9.02, median $10.50, highest $112.56 — a 12.5× difference within the same market.
As an outpatient, the same code is billed by 14 facilities here, median $10.50 — that is the price to compare if you are not being admitted.
Cash or insurance?
At 3 of 3 hospitals that publish insurer rates for this code here, the cash price is below the highest rate a health plan has negotiated, and at none is it 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.