Free T3 test cost in Houston, TX
In Houston-Pasadena-The Woodlands, TX, 14 hospitals list a cash price for free T3 thyroid hormone test: from $16.60 to $117.80, with a median of $95.00. The lowest listed price is at Hsa St. Joseph — $78.40 less than the median here. Across Texas, the median is $139.50 at 96 hospitals.
Cash prices at 14 facilities across 9 cities for code 84481, as an outpatient — the setting a self-pay patient normally buys. Collected Sep 23, 2026; the hospital files themselves were last updated between Mar 5, 2026 and Sep 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 |
|---|---|---|---|---|---|
| Hsa St. Joseph lowest Houston, TX · (713) 757-1000 T3; FREE | $16.60 | $552.74 | $8.91–$552.74 | 97% | Sep 1, 2026 source file |
| Harris Health Houston, TX FREE T3 | $16.94 | $61.00 | $14.23–$46.02 | 72% | — source file |
| Harris Health Taub Loop Houston, TX · (713) 873-2000 FREE T3 | $16.94 | $61.00 | $14.23–$46.02 | 72% | — source file |
| Texas Children's Hospital Houston, TX · (832) 824-1000 TC FREE T3 | $94.47 | $141.00 | $16.94–$133.95 | 33% | Mar 5, 2026 source file |
| Texas Children's Hospital Houston, TX · (832) 824-1000 TC FREE T3 | $94.47 | $141.00 | $16.94–$133.95 | 33% | Mar 5, 2026 source file |
| Texas Children's Hospital Houston, TX · (832) 824-1000 TC FREE T3 | $94.47 | $141.00 | $16.94–$133.95 | 33% | Mar 5, 2026 source file |
| Houston Methodist Clear Lake Hospital Nassau Bay, TX · (281) 333-5503 HC TRIIODOTHYRONINE (T3) FREE | $95.00 | $190.00 | — | 50% | Apr 1, 2026 source file |
| The Methodist Hospital Houston, TX · (713) 790-2221 HC TRIIODOTHYRONINE (T3) FREE | $95.00 | $190.00 | — | 50% | Apr 1, 2026 source file |
| Houston Methodist Baytown Hospital Baytown, TX · (281) 420-8600 HC TRIIODOTHYRONINE (T3) FREE | $95.00 | $190.00 | — | 50% | Apr 1, 2026 source file |
| Methodist Willowbrook Hospital Houston, TX · (281) 477-1000 HC TRIIODOTHYRONINE (T3) FREE | $95.00 | $190.00 | — | 50% | Apr 1, 2026 source file |
| Houston Methodist Continuing Care Hospital Katy, TX HC TRIIODOTHYRONINE (T3) FREE | $95.00 | $190.00 | — | 50% | Apr 1, 2026 source file |
| Houston Methodist Cypress Hospital Cypress, TX · (346) 618-1506 HC TRIIODOTHYRONINE (T3) FREE | $95.00 | $190.00 | — | 50% | Apr 1, 2026 source file |
| Methodist Sugar Land Hospital Sugar Land, TX · (281) 274-8000 HC TRIIODOTHYRONINE (T3) FREE | $95.00 | $190.00 | — | 50% | Apr 1, 2026 source file |
| Houston Methodist The Woodlands Hospital The Woodlands, TX · (936) 270-2000 HC TRIIODOTHYRONINE (T3) FREE | $95.00 | $190.00 | — | 50% | Apr 1, 2026 source file |
| Methodist West Houston Hospital Houston, TX · (832) 522-1000 HC TRIIODOTHYRONINE (T3) FREE | $95.00 | $190.00 | — | 50% | Apr 1, 2026 source file |
| Shriners Childrens Texas Galveston, TX · (409) 770-6600 FREE ASSAY (FT-3) | $117.80 | $117.80 | $12.02–$32.52 | — | — source file |
| Methodist Sugar Land Hospital Sugar Land, TX · (281) 274-8000 HC TRIIODOTHYRONINE (T3) FREE (INHOUSE) | $471.50 | $943.00 | — | 50% | Apr 1, 2026 source file |
| Houston Methodist Continuing Care Hospital Katy, TX HC TRIIODOTHYRONINE (T3) FREE (INHOUSE) | $471.50 | $943.00 | — | 50% | Apr 1, 2026 source file |
| Houston Methodist Baytown Hospital Baytown, TX · (281) 420-8600 HC TRIIODOTHYRONINE (T3) FREE (INHOUSE) | $471.50 | $943.00 | — | 50% | Apr 1, 2026 source file |
| Houston Methodist The Woodlands Hospital The Woodlands, TX · (936) 270-2000 HC TRIIODOTHYRONINE (T3) FREE (INHOUSE) | $471.50 | $943.00 | — | 50% | Apr 1, 2026 source file |
| Methodist Willowbrook Hospital Houston, TX · (281) 477-1000 HC TRIIODOTHYRONINE (T3) FREE (INHOUSE) | $471.50 | $943.00 | — | 50% | Apr 1, 2026 source file |
| Houston Methodist Clear Lake Hospital Nassau Bay, TX · (281) 333-5503 HC TRIIODOTHYRONINE (T3) FREE (INHOUSE) | $471.50 | $943.00 | — | 50% | Apr 1, 2026 source file |
| Methodist West Houston Hospital Houston, TX · (832) 522-1000 HC TRIIODOTHYRONINE (T3) FREE (INHOUSE) | $471.50 | $943.00 | — | 50% | Apr 1, 2026 source file |
| Houston Methodist Cypress Hospital Cypress, TX · (346) 618-1506 HC TRIIODOTHYRONINE (T3) FREE (INHOUSE) | $471.50 | $943.00 | — | 50% | Apr 1, 2026 source file |
Outpatient: lowest $16.60, median $95.00, highest $117.80 — a 7.1× difference within the same market.
As an inpatient, the same code is billed by 12 facilities here, median $95.00. 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 4 of 5 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
Free T3 is the active thyroid hormone not bound to proteins. It is usually checked after TSH (84443) and free T4 (84439), mainly when an overactive thyroid is suspected.
What the price covers
The price usually covers running the test. The blood draw (36415) is often billed as a separate line.