Free T3 test cost in Chicago, IL — inpatient
In Chicago-Naperville-Elgin, IL-IN, 33 hospitals list a cash price for free T3 thyroid hormone test as an inpatient: from $14.75 to $473.00, with a median of $82.50. The lowest listed price is at Uchicago Medicine AdventHealth Glenoaks and 3 other hospitals — $67.75 less than the median here. Across Illinois, the median is $82.50 at 65 hospitals.
Cash prices at 33 facilities across 23 cities for code 84481, as an inpatient (admitted to hospital) . Collected Sep 23, 2026; the hospital files themselves were last updated between Mar 17, 2025 and Apr 1, 2026.
Lowest$14.75Uchicago Medicine AdventHealth Glenoaks + 3 more
Median$82.50half pay less
Highest$473.00in this market
Difference32.1×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 Chicago-Naperville-Elgin, IL-IN.
median
Lowest $14.75Highest $473.00
Hospitals, cheapest first
| Hospital | Cash price | List price | Insurers pay | Off list | File date |
|---|---|---|---|---|---|
| Uchicago Medicine AdventHealth Glenoaks lowest Glendale Heights, IL · (630) 545-8000 HC T3 FREE | $14.75 | $59.00 | — | 75% | Apr 1, 2026 source file |
| Uchicago Medicine AdventHealth La Grange lowest La Grange, IL · (708) 352-1200 HC T3 FREE | $14.75 | $59.00 | — | 75% | Apr 1, 2026 source file |
| Uchicago Medicine AdventHealth La Grange lowest La Grange, IL · (708) 352-1200 HC T3, FREE - ARUP | $14.75 | $59.00 | — | 75% | Apr 1, 2026 source file |
| Uchicago Medicine AdventHealth La Grange lowest La Grange, IL · (708) 352-1200 HC T3 FREE | $14.75 | $59.00 | — | 75% | Apr 1, 2026 source file |
| Uchicago Medicine AdventHealth La Grange lowest La Grange, IL · (708) 352-1200 HC T3, FREE - ARUP | $14.75 | $59.00 | — | 75% | Apr 1, 2026 source file |
| Uchicago Medicine AdventHealth Glenoaks lowest Glendale Heights, IL · (630) 545-8000 HC T3, FREE - ARUP | $14.75 | $59.00 | — | 75% | Apr 1, 2026 source file |
| Uchicago Medicine AdventHealth Hinsdale lowest Hinsdale, IL · (630) 856-9000 HC T3 FREE | $14.75 | $59.00 | — | 75% | Apr 1, 2026 source file |
| Uchicago Medicine AdventHealth Hinsdale lowest Hinsdale, IL · (630) 856-9000 HC T3, FREE - ARUP | $14.75 | $59.00 | — | 75% | Apr 1, 2026 source file |
| Uchicago Medicine AdventHealth Hinsdale lowest Hinsdale, IL · (630) 856-9000 HC T3 FREE | $14.75 | $59.00 | — | 75% | Apr 1, 2026 source file |
| Uchicago Medicine AdventHealth Hinsdale lowest Hinsdale, IL · (630) 856-9000 HC T3, FREE - ARUP | $14.75 | $59.00 | — | 75% | Apr 1, 2026 source file |
| Uchicago Medicine AdventHealth Bolingbrook lowest Bolingbrook, IL · (630) 312-5000 HC T3 FREE | $14.75 | $59.00 | — | 75% | Apr 1, 2026 source file |
| Uchicago Medicine AdventHealth Bolingbrook lowest Bolingbrook, IL · (630) 312-5000 HC T3, FREE - ARUP | $14.75 | $59.00 | — | 75% | Apr 1, 2026 source file |
| Uchicago Medicine AdventHealth Bolingbrook lowest Bolingbrook, IL · (630) 312-5000 HC T3 FREE | $14.75 | $59.00 | — | 75% | Apr 1, 2026 source file |
| Uchicago Medicine AdventHealth Bolingbrook lowest Bolingbrook, IL · (630) 312-5000 HC T3, FREE - ARUP | $14.75 | $59.00 | — | 75% | Apr 1, 2026 source file |
| Uchicago Medicine AdventHealth Glenoaks lowest Glendale Heights, IL · (630) 545-8000 HC T3 FREE | $14.75 | $59.00 | — | 75% | Apr 1, 2026 source file |
| Uchicago Medicine AdventHealth Glenoaks lowest Glendale Heights, IL · (630) 545-8000 HC T3, FREE - ARUP | $14.75 | $59.00 | — | 75% | Apr 1, 2026 source file |
| Presence Saint Joseph Hospital - Chicago Chicago, IL · (773) 665-3000 HC T3, FREE TRIIODOTHYRONINE, SERUM | $32.67 | $99.00 | $16.94–$70.83 | 67% | — source file |
| NorthShore University HealthSystems Skokie Hospital Skokie, IL R T3 Free by Dialysis Lc-Ms | $52.00 | $80.00 | $13.04–$42.80 | 35% | — source file |
| NorthShore University HealthSystems Highland Park Hospital Highland Park, IL R T3 Free by Dialysis Lc-Ms | $52.00 | $80.00 | $13.04–$42.80 | 35% | — source file |
| NorthShore University HealthSystems Glenbrook Hospital Glenview, IL R T3 Free by Dialysis Lc-Ms | $52.00 | $80.00 | $13.04–$42.80 | 35% | — source file |
| NorthShore University HealthSystems Evanston Hospital Evanson, IL · (847) 570-2000 R T3 Free by Dialysis Lc-Ms | $52.00 | $80.00 | $13.04–$42.80 | 35% | — source file |
| La Rabida Children's Hospital|LaRabida Childrens Hospital Chicago, IL · (773) 363-6700 FREE T3 | $73.63 | $73.63 | — | — | Apr 1, 2026 source file |
| Endeavor Health Clinical Operations Evanston, IL HB R T3 FREE BY DIALYSIS LC-MS | $80.00 | $80.00 | — | — | Apr 1, 2026 source file |
| Endeavor Health Clinical Operations Highland Park, IL HB R T3 FREE BY DIALYSIS LC-MS | $80.00 | $80.00 | — | — | Apr 1, 2026 source file |
| Swedish Covenant Health Chicago, IL · (773) 878-8200 HB R T3 FREE BY DIALYSIS LC-MS | $80.00 | $80.00 | — | — | Apr 1, 2026 source file |
| Advocate Good Shepherd Hospital Barrington, IL · (847) 381-9600 T3, FREE | $82.50 | $165.00 | $72.11–$132.00 | 50% | Nov 4, 2025 source file |
| Advocate Illinois Masonic Medical Center Chicago, IL · (773) 975-1600 T3, FREE | $82.50 | $165.00 | $72.11–$132.00 | 50% | Nov 4, 2025 source file |
| Advocate Childrens Hospital Oak Lawn Oak Lawn, IL T3, FREE | $82.50 | $165.00 | $72.11–$132.00 | 50% | Nov 4, 2025 source file |
| Advocate South Suburban Hospital Hazel Crest, IL T3, FREE | $82.50 | $165.00 | $72.11–$132.00 | 50% | Nov 4, 2025 source file |
| Advocate Condell Medical Center Libertyville, IL · (847) 362-2900 T3, FREE | $82.50 | $165.00 | $72.11–$132.00 | 50% | Nov 4, 2025 source file |
| Advocate Good Samaritan Hospital Downers Grove, IL · (630) 275-5900 T3, FREE | $82.50 | $165.00 | $72.11–$132.00 | 50% | Nov 4, 2025 source file |
| Advocate Lutheran General Hospital Park Ridge, IL · (847) 723-2210 T3, FREE | $82.50 | $165.00 | $72.11–$132.00 | 50% | Nov 4, 2025 source file |
| Advocate Christ Medical Center Oak Lawn, IL · (708) 684-8000 T3, FREE | $82.50 | $165.00 | $72.11–$132.00 | 50% | Nov 4, 2025 source file |
| Advocate Childrens Hospital Park Ridge Park Ridge, IL T3, FREE | $82.50 | $165.00 | $72.11–$132.00 | 50% | Nov 4, 2025 source file |
| Advocate Trinity Hospital Chicago, IL · (773) 967-5002 T3, FREE | $82.50 | $165.00 | $72.11–$132.00 | 50% | Nov 4, 2025 source file |
| Advocate Sherman Hospital Elgin, IL · (847) 742-9800 T3, FREE | $82.50 | $165.00 | $72.11–$148.50 | 50% | Nov 4, 2025 source file |
| NorthShore University HealthSystems Evanston Hospital Evanson, IL · (847) 570-2000 Free T3* | $130.00 | $200.00 | $32.60–$107.00 | 35% | — source file |
| NorthShore University HealthSystems Skokie Hospital Skokie, IL Free T3* | $130.00 | $200.00 | $32.60–$107.00 | 35% | — source file |
| NorthShore University HealthSystems Glenbrook Hospital Glenview, IL Free T3* | $130.00 | $200.00 | $32.60–$107.00 | 35% | — source file |
| NorthShore University HealthSystems Highland Park Hospital Highland Park, IL Free T3* | $130.00 | $200.00 | $32.60–$107.00 | 35% | — source file |
| Louis A Weiss Memorial Hospital Chicago, IL · (773) 878-8700 T3 Free | $138.00 | $405.88 | $263.82 | 66% | Mar 17, 2025 source file |
| Louis A Weiss Memorial Hospital Chicago, IL · (773) 878-8700 Triiodothyronine (T3), Free SO | $138.00 | $405.88 | $263.82 | 66% | Mar 17, 2025 source file |
| Louis A Weiss Memorial Hospital Chicago, IL · (773) 878-8700 .T4F+T3Free SO | $138.00 | $405.88 | $263.82 | 66% | Mar 17, 2025 source file |
| Louis A Weiss Memorial Hospital Chicago, IL · (773) 878-8700 T3 Free Dialysis LC/MS-MS SO | $138.00 | $405.88 | $263.82 | 66% | Mar 17, 2025 source file |
| Northwest Community Hospital Arlington Heights, IL · (847) 618-1000 Hb Free Assay (Ft-3) | $189.00 | $189.00 | — | — | Apr 1, 2026 source file |
| Endeavor Health Clinical Operations Evanston, IL HB FREE T3* | $200.00 | $200.00 | — | — | Apr 1, 2026 source file |
| Swedish Covenant Health Chicago, IL · (773) 878-8200 HB FREE T3* | $200.00 | $200.00 | — | — | Apr 1, 2026 source file |
| Endeavor Health Clinical Operations Highland Park, IL HB FREE T3* | $200.00 | $200.00 | — | — | Apr 1, 2026 source file |
| Elmhurst Memorial Hospital Elmhurst, IL · (331) 221-1000 HC TRIIODOTHYRONINE T3 FREE | $203.00 | $203.00 | — | — | Apr 1, 2026 source file |
| Edward Hospital Naperville, IL · (630) 527-3000 HC TRIIODOTHYRONINE T3 FREE | $203.00 | $203.00 | — | — | Apr 1, 2026 source file |
| Resilience Healthcare West Suburban Medical Center Oak Park, IL · (708) 383-6200 .T4F+T3Free SO | $220.54 | $648.65 | $421.62 | 66% | Mar 17, 2025 source file |
| Resilience Healthcare West Suburban Medical Center Oak Park, IL · (708) 383-6200 Triiodothyronine (T3), Free SO | $220.54 | $648.65 | $421.62 | 66% | Mar 17, 2025 source file |
| Resilience Healthcare West Suburban Medical Center Oak Park, IL · (708) 383-6200 T3 Free | $220.54 | $648.65 | $421.62 | 66% | Mar 17, 2025 source file |
| Resilience Healthcare West Suburban Medical Center Oak Park, IL · (708) 383-6200 T3 Free Dialysis LC/MS-MS SO | $220.54 | $648.65 | $421.62 | 66% | Mar 17, 2025 source file |
| Ingalls Memorial Hospital Harvey, IL · (708) 333-2300 Hc Triiodothyronine T3; Free | $245.00 | $245.00 | — | — | Apr 1, 2026 source file |
| Uchicago Medicine Northwest Indiana Crown Point, IN · (312) 755-4706 HC TRIIODOTHYRONINE T3; FREE | $245.00 | $245.00 | — | — | Apr 1, 2026 source file |
| Ann & Robert H. Lurie Children's Hospital of Chicago Chicago, IL · (312) 227-4000 H FREE T3 (TRIIODOTHYRONINE) | $367.50 | $525.00 | $194.25–$3,678.00 | 30% | — source file |
| The University of Chicago Medical Center Chicago, IL · (773) 702-9785 Hc Triiodothyronine T3; Free | $473.00 | $473.00 | — | — | Apr 1, 2026 source file |
Inpatient: lowest $14.75, median $82.50, highest $473.00 — a 32.1× difference within the same market.
As an outpatient, the same code is billed by 51 facilities here, median $82.50 — that is the price to compare if you are not being admitted.
Cash or insurance?
At 15 of 19 hospitals that publish insurer rates for this code here, the cash price is below the highest rate a health plan has negotiated, and at 2 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
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.