Free T3 test cost in Jacksonville, FL
In Jacksonville, FL, 13 hospitals list a cash price for free T3 thyroid hormone test: from $16.28 to $616.00, with a median of $153.76. The lowest listed price is at Ascension St Vincent's Southside and 3 other hospitals — $137.48 less than the median here. Across Florida, the median is $66.35 at 165 hospitals.
- The median here, $153.76, is 60% above the US median of $96.00.
- That is 9.1× Medicare's 2026 national rate for the same service ($16.94).
- Jacksonville, FL ranks 4th of 4 metro areas in Florida by median, cheapest first.
- 3 of 13 hospitals list a cash price equal to their full list price, with no self-pay discount.
Cash prices at 13 facilities across 7 cities for code 84481, as an outpatient — the setting a self-pay patient normally buys. Collected Oct 31, 2026; the hospital files themselves were last updated between Nov 12, 2025 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 Jacksonville, FL.
Hospitals, cheapest first
| Hospital | Cash price | List price | Insurers pay | Off list |
|---|---|---|---|---|
| Ascension St Vincent's Southside lowest Jacksonville, FL · (904) 296-3700 FREE TRIIODOTHYRONINE T3+1 more line at this price File of Jan 1, 2026 · source file | $16.28 | $44.00 | $8.80–$44.00 | 63% |
| St. Vincent's Medical Center-Clay County lowest Middleburg, FL · (904) 602-1000 FREE TRIIODOTHYRONINE T3+1 more line at this price File of Jan 1, 2026 · source file | $16.28 | $44.00 | $8.80–$44.00 | 63% |
| Ascension St Vincent's Riverside lowest Jacksonville, FL · (904) 308-7300 FREE TRIIODOTHYRONINE T3+1 more line at this price File of Jan 1, 2026 · source file | $16.28 | $44.00 | $8.80–$42.35 | 63% |
| Ascension St Vincent's St Johns County lowest Saint Johns, FL · (904) 450-6020 FREE TRIIODOTHYRONINE T3+1 more line at this price File of Jan 1, 2026 · source file | $16.28 | $44.00 | $8.80–$44.00 | 63% |
| University of Florida Health in Jacksonville Jacksonville, FL · (904) 244-4000 HB TRI-IODOTHYRONINE FREE File of Mar 31, 2026 · source file | $61.33 | $111.50 | $7.33–$19.82 | 45% |
| ED Fraser Memorial Hospital Macclenny, FL · (904) 259-3151 T3, FREE File of Nov 12, 2025 · source file | $76.00 | $76.00 | $16.60–$76.00 | — |
| Baptist Medical Center of Nassau Fernandina Beach, FL · (904) 321-3500 HC TRIIODOTHYRONINE FREE ASSAY (FT-3) - T3 FREE File of Feb 6, 2026 · source file | $153.76 | $248.00 | $71.92–$243.04 | 38% |
| Baptist Health Medical Center - Jacksonville Fleming Island, FL · (904) 202-2000 HC TRIIODOTHYRONINE FREE ASSAY (FT-3) - T3 FREE File of Feb 6, 2026 · source file | $153.76 | $248.00 | $6.66–$40.66 | 38% |
| Baptist Medical Center of the Beaches Jacksonville Beach, FL · (904) 247-2900 HC TRIIODOTHYRONINE FREE ASSAY (FT-3) - T3 FREE File of Feb 6, 2026 · source file | $153.76 | $248.00 | $49.60–$243.04 | 38% |
| Baptist Health Medical Center - Jacksonville Jacksonville, FL · (904) 202-2000 HC TRIIODOTHYRONINE FREE ASSAY (FT-3) - T3 FREE+1 more line at this price File of Feb 6, 2026 · source file | $153.76 | $248.00 | $6.66–$983.45 | 38% |
| Baptist Medical Center South Jacksonville, FL · (904) 202-2000 HC TRIIODOTHYRONINE FREE ASSAY (FT-3) - T3 FREE File of Feb 6, 2026 · source file | $153.76 | $248.00 | $49.60–$243.04 | 38% |
| HCA Florida Orange Park Hospital Middleburg, FL · (904) 276-8500 T3 FREE+2 more lines at this price File of Sep 1, 2026 · source file | $299.38 | $299.38 | $16.94–$269.44 | — |
| HCA Florida Memorial Hospital Jacksonville, FL · (904) 702-6111 Triiodothyronine T3; free UNSCHEDULED+2 more lines at this price File of Sep 1, 2026 · source file | $616.00 | $616.00 | $16.94–$554.40 | — |
Outpatient: lowest $16.28, median $153.76, highest $616.00 — a 37.8× difference within the same market.
As an inpatient, the same code is billed by 7 facilities here, median $16.28. 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 8 of 13 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 free T3 test is, what the price covers and why prices differ: Free T3 test explained.