Lab tests CPT 84481 Illinois Outpatient

Free T3 test cost in Illinois

In Illinois, 65 hospitals publish a cash price for free T3 thyroid hormone test: from $13.43 to $514.98, with a median of $82.50. The lowest price is at Roseland Community Hospital Association (Chicago). The highest price is 38.3× the lowest.

Outpatient cash prices, one line per hospital — its lowest listed price for code 84481. Prices for both sides of the body and inpatient prices are not mixed in. Collected Sep 23, 2026.

Lowest$13.43Roseland Community Hospital Association

Median$82.50half pay less

Highest$514.98in Illinois

Lowest saves$69.07vs the median

Hospitals in Illinois, cheapest first

Hospital	Cash price	List price	File date
Roseland Community Hospital Association lowest Chicago · Chicago-Naperville-Elgin, IL-IN Thyroid hormone, T3 measurement, free	$13.43	$42.35	Jul 1, 2026 source file
Uchicago Medicine AdventHealth Bolingbrook Bolingbrook · Chicago-Naperville-Elgin, IL-IN HC T3 FREE	$14.75	$59.00	Apr 1, 2026 source file
Uchicago Medicine AdventHealth Glenoaks Glendale Heights · Chicago-Naperville-Elgin, IL-IN HC T3 FREE	$14.75	$59.00	Apr 1, 2026 source file
Uchicago Medicine AdventHealth Hinsdale Hinsdale · Chicago-Naperville-Elgin, IL-IN HC T3 FREE	$14.75	$59.00	Apr 1, 2026 source file
Uchicago Medicine AdventHealth La Grange La Grange · Chicago-Naperville-Elgin, IL-IN HC T3 FREE	$14.75	$59.00	Apr 1, 2026 source file
Mercy Medical Center Aurora · Chicago-Naperville-Elgin, IL-IN T3(TRI-IODOTHYRONINE), FREE	$16.00	$454.00	Sep 1, 2026 source file
Saint Francis Hospital Evanston · Chicago-Naperville-Elgin, IL-IN HC TRIIODOTHYRONINE FREE ASSAY (FT-3)	$16.00	$99.00	Sep 1, 2026 source file
Northwestern Lake Forest Hospital Lake Forest · Chicago-Naperville-Elgin, IL-IN HB Ref Free T3 by Dialysis	$27.30	$39.00	Apr 1, 2026 source file
Northwestern Medicine McHenry Hospital McHenry · Chicago-Naperville-Elgin, IL-IN HB Ref Free T3 by Dialysis	$27.30	$39.00	Apr 1, 2026 source file
Presence Saint Joseph Hospital - Chicago Chicago · Chicago-Naperville-Elgin, IL-IN HC T3, FREE TRIIODOTHYRONINE, SERUM	$32.67	$99.00	— source file
MercyOne Genesis Aledo Medical Center Aledo · Davenport-Moline-Rock Island, IA-IL Triiodothyronine Free-Sendout	$39.00	$65.00	Mar 31, 2026 source file
Community First Medical Center Chicago · Chicago-Naperville-Elgin, IL-IN Thyroid hormone, T3 measurement, free	$39.75	$79.50	Apr 1, 2026 source file
Deaconess Illinois Crossroads Mount Vernon · Mount Vernon, IL CHG ASSAY OF TRIIODOTHYRONINE T3 FREE	$42.00	$120.00	Feb 3, 2026 source file
Deaconess Illinois Union County Hospital Anna · Anna, IL CHG ASSAY OF TRIIODOTHYRONINE T3 FREE	$42.00	$120.00	Feb 3, 2026 source file
Heartland Regional Medical Center Marion · Marion-Herrin, IL T3 FREE	$42.00	$120.00	Feb 3, 2026 source file
Trinity Medical Center Rock Island · Davenport-Moline-Rock Island, IA-IL CHG TRIIODOTHYRONINE FREE ASSAY (FT-3)	$43.20	$54.00	Jan 28, 2026 source file
Northwestern Medicine Marianjoy Rehabilitation Hospital Wheaton · Chicago-Naperville-Elgin, IL-IN HB T3 Free	$51.10	$73.00	Apr 1, 2026 source file
MercyOne Genesis Silvis Medical Center Silvis · Davenport-Moline-Rock Island, IA-IL Triiodothyronine Free-Sendout	$51.60	$86.00	Mar 31, 2026 source file
Gottlieb Memorial Hospital Melrose Park · Chicago-Naperville-Elgin, IL-IN Triiodothyronine T3 Free	$51.87	$273.00	Mar 31, 2026 source file
NorthShore University HealthSystems Evanston Hospital Evanson · Chicago-Naperville-Elgin, IL-IN R T3 Free by Dialysis Lc-Ms	$52.00	$80.00	— source file
NorthShore University HealthSystems Glenbrook Hospital Glenview · Chicago-Naperville-Elgin, IL-IN R T3 Free by Dialysis Lc-Ms	$52.00	$80.00	— source file
NorthShore University HealthSystems Highland Park Hospital Highland Park · Chicago-Naperville-Elgin, IL-IN R T3 Free by Dialysis Lc-Ms	$52.00	$80.00	— source file
NorthShore University HealthSystems Skokie Hospital Skokie · Chicago-Naperville-Elgin, IL-IN R T3 Free by Dialysis Lc-Ms	$52.00	$80.00	— source file
Loyola University Medical Center Maywood · Chicago-Naperville-Elgin, IL-IN Triiodothyronine T3 Free	$62.79	$273.00	Mar 31, 2026 source file
St Johns Hospital of the Hospital Sisters of the Third Order of St Francis Springfield · Springfield, IL HC T3 FREE	$72.00	$100.00	— source file
La Rabida Children's Hospital\|LaRabida Childrens Hospital Chicago · Chicago-Naperville-Elgin, IL-IN FREE T3	$73.63	$73.63	Apr 1, 2026 source file
Riverside Medical Center Kankakee · Kankakee, IL THYROID HORMONE; T3 MEASUREMENT; FREE	$75.87	$285.00	— source file
Endeavor Health Clinical Operations Highland Park · Chicago-Naperville-Elgin, IL-IN HB R T3 FREE BY DIALYSIS LC-MS	$80.00	$80.00	Apr 1, 2026 source file
Northshore University Healthsystem - Evanston Hospital Evanston · Chicago-Naperville-Elgin, IL-IN HB R T3 FREE BY DIALYSIS LC-MS	$80.00	$80.00	Apr 1, 2026 source file
Swedish Covenant Health Chicago · Chicago-Naperville-Elgin, IL-IN HB R T3 FREE BY DIALYSIS LC-MS	$80.00	$80.00	Apr 1, 2026 source file
Advocate Childrens Hospital Oak Lawn Oak Lawn · Chicago-Naperville-Elgin, IL-IN T3, FREE	$82.50	$165.00	Nov 4, 2025 source file
Advocate Childrens Hospital Park Ridge Park Ridge · Chicago-Naperville-Elgin, IL-IN T3, FREE	$82.50	$165.00	Nov 4, 2025 source file
Advocate Christ Medical Center Oak Lawn · Chicago-Naperville-Elgin, IL-IN T3, FREE	$82.50	$165.00	Nov 4, 2025 source file
Advocate Condell Medical Center Libertyville · Chicago-Naperville-Elgin, IL-IN T3, FREE	$82.50	$165.00	Nov 4, 2025 source file
Advocate Good Samaritan Hospital Downers Grove · Chicago-Naperville-Elgin, IL-IN T3, FREE	$82.50	$165.00	Nov 4, 2025 source file
Advocate Good Shepherd Hospital Barrington · Chicago-Naperville-Elgin, IL-IN T3, FREE	$82.50	$165.00	Nov 4, 2025 source file
Advocate Illinois Masonic Medical Center Chicago · Chicago-Naperville-Elgin, IL-IN T3, FREE	$82.50	$165.00	Nov 4, 2025 source file
Advocate Lutheran General Hospital Park Ridge · Chicago-Naperville-Elgin, IL-IN T3, FREE	$82.50	$165.00	Nov 4, 2025 source file
Advocate Sherman Hospital Elgin · Chicago-Naperville-Elgin, IL-IN T3, FREE	$82.50	$165.00	Nov 4, 2025 source file
Advocate South Suburban Hospital Hazel Crest · Chicago-Naperville-Elgin, IL-IN T3, FREE	$82.50	$165.00	Nov 4, 2025 source file
Advocate Trinity Hospital Chicago · Chicago-Naperville-Elgin, IL-IN T3, FREE	$82.50	$165.00	Nov 4, 2025 source file
St Francis Hospital Sisters of the Third Order of St Francis Litchfield · Litchfield, IL HC T3 FREE	$92.16	$128.00	— source file
Humboldt Park Health Chicago · Chicago-Naperville-Elgin, IL-IN Thyroid hormone, T3 measurement, free	$94.67	$338.10	Aug 24, 2026 source file
St Josephs Hospital of the Hospital Sisters of the Third Order of St Francis Highland · St. Louis, MO-IL HC T3 FREE	$97.20	$135.00	— source file
Palos Community Hospital Palos Heights · Chicago-Naperville-Elgin, IL-IN HB Ref Free T3 by Dialysis	$107.10	$153.00	Apr 1, 2026 source file
St Elizabeths Hospital of the Hospital Sisters of the Third Order of St Francis O'Fallon · St. Louis, MO-IL HC T3 FREE	$119.52	$166.00	— source file
Northwestern Medicine Central DuPage Hospital Winfield · Chicago-Naperville-Elgin, IL-IN HB Ref Triiodothyronine, Total and Free, T3 by Dialysis	$125.30	$179.00	Apr 1, 2026 source file
Northwestern Medicine Delnor Hospital Geneva · Chicago-Naperville-Elgin, IL-IN HB Ref Triiodothyronine, Total and Free, T3 by Dialysis	$125.30	$179.00	Apr 1, 2026 source file
Northwestern Medicine Kishwaukee Hospital DeKalb · Chicago-Naperville-Elgin, IL-IN HB Ref Triiodothyronine, Total and Free, T3 by Dialysis	$125.30	$179.00	Apr 1, 2026 source file
Northwestern Medicine Valley West Hospital Sandwich · Chicago-Naperville-Elgin, IL-IN HB Ref Triiodothyronine, Total and Free, T3 by Dialysis	$125.30	$179.00	Apr 1, 2026 source file
St Josephs Hospital Hospital Sisters Third Order of St Francis Breese · St. Louis, MO-IL HC T3 FREE	$127.44	$177.00	— source file
Shriners Childrens - Chicago Chicago · Chicago-Naperville-Elgin, IL-IN FREE ASSAY (FT-3)	$134.90	$134.90	— source file
Hshs Good Shepherd Hospital Shelbyville · Shelbyville, IL HC T3 FREE	$135.36	$188.00	— source file
Louis A Weiss Memorial Hospital Chicago · Chicago-Naperville-Elgin, IL-IN Triiodothyronine (T3), Free SO	$138.00	$405.88	Mar 17, 2025 source file
St Anthonys Memorial Hospital of the Hospital Sisters of the Third Order of St Francis Mattoon · Charleston-Mattoon, IL HC T3 FREE	$164.16	$228.00	— source file
Northwest Community Hospital Arlington Heights · Chicago-Naperville-Elgin, IL-IN Hb Free Assay (Ft-3)	$189.00	$189.00	Apr 1, 2026 source file
Edward Hospital Naperville · Chicago-Naperville-Elgin, IL-IN HC TRIIODOTHYRONINE T3 FREE	$203.00	$203.00	Apr 1, 2026 source file
Elmhurst Memorial Hospital Elmhurst · Chicago-Naperville-Elgin, IL-IN HC TRIIODOTHYRONINE T3 FREE	$203.00	$203.00	Apr 1, 2026 source file
Resilience Healthcare West Suburban Medical Center Oak Park · Chicago-Naperville-Elgin, IL-IN .T4F+T3Free SO	$220.54	$648.65	Mar 17, 2025 source file
Ingalls Memorial Hospital Harvey · Chicago-Naperville-Elgin, IL-IN Hc Triiodothyronine T3; Free	$245.00	$245.00	Apr 1, 2026 source file
St Marys Hospital Decatur of Hospital Sisters of the Third Order of St Francis Decatur · Decatur, IL HC T3 FREE	$277.92	$386.00	— source file
Hshs Holy Family Hospital Greenville · St. Louis, MO-IL HC T3 FREE	$279.36	$388.00	— source file
Ann & Robert H. Lurie Children's Hospital of Chicago Chicago · Chicago-Naperville-Elgin, IL-IN H FREE T3 (TRIIODOTHYRONINE)	$367.50	$525.00	— source file
The University of Chicago Medical Center Chicago · Chicago-Naperville-Elgin, IL-IN Hc Triiodothyronine T3; Free	$473.00	$473.00	Apr 1, 2026 source file
Gateway Regional Medical Center Granite City · St. Louis, MO-IL T3,FREE	$514.98	$858.30	— source file

By metro area

Each metro page compares every listing, including prices for both sides of the body.

Metro area	Hospitals	Lowest	Median
Chicago-Naperville-Elgin, IL-IN	48	$13.43	$82.50
St. Louis, MO-IL	5	$97.20	$127.44
Davenport-Moline-Rock Island, IA-IL	3	$39.00	$43.20
Anna, IL	1	$42.00	$42.00
Charleston-Mattoon, IL	1	$164.16	$164.16
Decatur, IL	1	$277.92	$277.92
Kankakee, IL	1	$75.87	$75.87
Litchfield, IL	1	$92.16	$92.16
Marion-Herrin, IL	1	$42.00	$42.00
Mount Vernon, IL	1	$42.00	$42.00
Shelbyville, IL	1	$135.36	$135.36
Springfield, IL	1	$72.00	$72.00

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.

Free T3 thyroid hormone test in other states

Median cash price across the state's hospitals.