Total T3 test cost in St. Louis, MO
In St. Louis, MO-IL, 13 hospitals list a cash price for total triiodothyronine (T3) blood test: from $34.72 to $623.60, with a median of $111.50. The lowest listed price is at Touchette Regional Hospital — $76.78 less than the median here. Across Missouri, the median is $75.30 at 64 hospitals.
Cash prices at 13 facilities across 11 cities for code 84480, as an outpatient — the setting a self-pay patient normally buys. Collected Sep 27, 2026; the hospital files themselves were last updated between Feb 6, 2026 and Feb 9, 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 St. Louis, MO-IL.
Hospitals, cheapest first
| Hospital | Cash price | List price | Insurers pay | Off list | File date |
|---|---|---|---|---|---|
| Touchette Regional Hospital lowest Cahokia Heights, IL · (618) 332-3060 Triiodothyronine T3; total (TT-3) | $34.72 | $56.00 | $2.12–$53.00 | 38% | — source file |
| St Elizabeths Hospital of the Hospital Sisters of the Third Order of St Francis O'Fallon, IL · (618) 234-2120 HC T3 TOTAL | $51.12 | $71.00 | $9.27–$71.00 | 28% | — source file |
| Mercy Hospital Washington Washington, MO · (636) 239-8000 T3 Total | $74.75 | $115.00 | $7.48–$103.50 | 35% | — source file |
| Mercy Hospital Jefferson Festus, MO · (636) 933-1000 T3 Total | $74.75 | $115.00 | $12.76–$31.91 | 35% | — source file |
| Mercy Hospital South Saint Louis, MO · (314) 525-1000 T3 Total | $77.35 | $119.00 | $7.74–$119.00 | 35% | — source file |
| Community Hospital of Staunton Staunton, IL · (618) 635-2200 FREE T3 QUEST | $92.25 | $184.50 | $53.34–$167.90 | 50% | Feb 9, 2026 source file |
| Community Hospital of Staunton Staunton, IL · (618) 635-2200 TRIIODOTHYRONINE (T3) | $92.25 | $184.50 | $53.34–$167.90 | 50% | Feb 9, 2026 source file |
| Shriners Childrens - St Louis Saint Louis, MO · (314) 432-3600 ASSAY TRIIODOTHYRONINE (T3) | $111.50 | $111.50 | $7.56–$24.36 | — | — source file |
| Mercy Hospital St Louis Saint Louis, MO · (314) 251-6000 T3 Total | $117.00 | $180.00 | $12.76–$31.91 | 35% | — source file |
| Mercy Hospital Lincoln Troy, MO · (636) 528-8551 T3 Total | $122.20 | $188.00 | $12.22–$188.00 | 35% | — source file |
| Anderson Hospital Maryville, IL · (618) 288-5711 FREE T3 QUEST | $137.50 | $275.00 | $13.26–$247.50 | 50% | Feb 6, 2026 source file |
| Anderson Hospital Maryville, IL · (618) 288-5711 TRIIODOTHYRONINE (T3) | $141.30 | $282.60 | $13.26–$254.34 | 50% | Feb 6, 2026 source file |
| Hshs Holy Family Hospital Greenville, IL · (618) 664-1230 HC T3 TOTAL-90 | $156.24 | $217.00 | $9.74–$217.00 | 28% | — source file |
| Carlinville Area Hospital Carlinville, IL · (217) 854-3141 TOTAL T-3 (REF) | $209.30 | $299.00 | $107.64–$427.14 | 30% | — source file |
| Gateway Regional Medical Center Granite City, IL · (618) 798-3000 T3,TOTAL | $623.60 | $1,039.33 | $1,039.33 | 40% | — source file |
Outpatient: lowest $34.72, median $111.50, highest $623.60 — a 18.0× difference within the same market.
As an inpatient, the same code is billed by 9 facilities here, median $138.70. 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 10 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 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 total T3 test measures the thyroid hormone triiodothyronine. It is used 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.