Lab tests CPT 84436 Illinois Outpatient

Total T4 test cost in Illinois

In Illinois, 111 hospitals publish a cash price for total thyroxine (T4) blood test: from $6.00 to $544.50, with a median of $81.90. The lowest price is at Mercy Medical Center (Aurora) and 6 other hospitals. The highest price is 90.8× the lowest.

Outpatient cash prices, one line per hospital — its lowest listed price for code 84436. Prices for both sides of the body and inpatient prices are not mixed in. Collected Oct 2, 2026. See them on a map

Lowest$6.00Mercy Medical Center + 6 more
Median$81.90half of hospitals charge less
Highest$544.50in Illinois
Lowest saves$75.90vs the median

Hospitals in Illinois, cheapest first

HospitalCash priceList priceFile date
Mercy Medical Center lowest Aurora · Chicago-Naperville-Elgin, IL-IN THYROXINE, T4 TOTAL $6.00 $232.00 Sep 1, 2026
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Saint Francis Hospital lowest Evanston · Chicago-Naperville-Elgin, IL-IN HC ASSAY OF TOTAL THYROXINE $6.00 $120.00 Sep 1, 2026
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Saint Joseph Medical Center - Joliet lowest Joliet · Chicago-Naperville-Elgin, IL-IN THYROXINE, T4 TOTAL $6.00 $308.00 Sep 1, 2026
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Uchicago Medicine AdventHealth Bolingbrook lowest Bolingbrook · Chicago-Naperville-Elgin, IL-IN HC THYROXINE T4 TOTAL - ARUP $6.00 $24.00 Apr 1, 2026
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Uchicago Medicine AdventHealth Glenoaks lowest Glendale Heights · Chicago-Naperville-Elgin, IL-IN HC THYROXINE T4 TOTAL $6.00 $24.00 Apr 1, 2026
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Uchicago Medicine AdventHealth Hinsdale lowest Hinsdale · Chicago-Naperville-Elgin, IL-IN HC THYROXINE T4 TOTAL - ARUP $6.00 $24.00 Apr 1, 2026
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Uchicago Medicine AdventHealth La Grange lowest La Grange · Chicago-Naperville-Elgin, IL-IN HC THYROXINE T4 TOTAL $6.00 $24.00 Apr 1, 2026
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Carle BroMenn Medical Center Normal · Bloomington, IL Thyroxine, Total Ref $8.00 $8.00 Apr 15, 2026
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Carle Eureka Hospital Eureka · Peoria, IL Thyroxine, Total Ref $8.00 $8.00 Apr 15, 2026
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John H. Stroger, Jr. Hospital Chicago · Chicago-Naperville-Elgin, IL-IN THYROXINE (T-4) TOTAL $12.60 $18.00 Apr 1, 2026
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Roseland Community Hospital Chicago · Chicago-Naperville-Elgin, IL-IN Thyroxine (thyroid chemical), total $13.43 $133.00 Jul 1, 2026
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Northwestern Lake Forest Hospital Lake Forest · Chicago-Naperville-Elgin, IL-IN HB Ref Thyroid Panel, T4 Total (Q) $16.80 $24.00 Apr 1, 2026
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The Carle Foundation Hospital Urbana · Champaign-Urbana, IL T4 (Thyroxine), Total Only, S Ref $17.00 $17.00 Apr 15, 2026
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Blessing Hospital Quincy · Quincy, IL-MO CHG ASSAY OF THYROXINE TOTAL $18.23 $30.37 Jun 8, 2026
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Fairfield Memorial Hospital Fairfield · Fairfield, IL VET T4 $18.40 $23.00 Mar 24, 2026
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Morris Hospital Morris · Chicago-Naperville-Elgin, IL-IN Thyroxine (thyroid chemical), total $19.01 $79.00 Jun 30, 2026
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Hoopeston Community Memorial Hospital Hoopeston · Danville, IL Assay of total thyroxine $22.00 $22.00 Apr 15, 2026
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Mason District Hospital Havana · Havana, IL OR T4 $22.00 $27.50 May 8, 2026
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MercyOne Genesis Aledo Medical Center Aledo · Davenport-Moline-Rock Island, IA-IL Thyroxine (T4)-Sendout $22.80 $38.00 Mar 31, 2026
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Gateway Regional Medical Center Granite City · St. Louis, MO-IL THYROXINE T4,TOTAL $23.24 $38.73 Mar 30, 2026
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Pana Community Hospital Pana · Taylorville, IL Thyroxine (T4) LC $25.50 $25.50 Nov 3, 2025
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Gottlieb Memorial Hospital Melrose Park · Chicago-Naperville-Elgin, IL-IN Thyroxine (T4) $26.22 $138.00 Mar 31, 2026
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MacNeal Hospital Berwyn · Chicago-Naperville-Elgin, IL-IN Thyroxine (T4) $26.22 $138.00 Mar 31, 2026
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Northwestern Medicine Central DuPage Hospital Winfield · Chicago-Naperville-Elgin, IL-IN HB Ref Free Thyroxine Index, Thyroxine, Total (Q) $27.30 $39.00 Apr 1, 2026
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Northwestern Medicine McHenry Hospital McHenry · Chicago-Naperville-Elgin, IL-IN HB Ref Free Thyroxine Index, Thyroxine, Total (Q) $27.30 $39.00 Apr 1, 2026
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Northwestern Memorial Hospital Chicago · Chicago-Naperville-Elgin, IL-IN HB Ref Free Thyroxine Index, Thyroxine, Total (Q) $27.30 $39.00 Apr 1, 2026
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MercyOne Genesis Silvis Medical Center Silvis · Davenport-Moline-Rock Island, IA-IL Thyroxine (T4)-Sendout $30.60 $51.00 Mar 31, 2026
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Humboldt Park Health Chicago · Chicago-Naperville-Elgin, IL-IN Thyroxine (thyroid chemical), total $31.16 $111.30 Sep 29, 2026
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Loyola University Medical Center Maywood · Chicago-Naperville-Elgin, IL-IN Thyroxine (T4) $31.74 $138.00 Mar 31, 2026
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Northwestern Medicine Kishwaukee Hospital DeKalb · Chicago-Naperville-Elgin, IL-IN HB T4 $35.00 $50.00 Apr 1, 2026
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Presence Saint Joseph Hospital - Chicago Chicago · Chicago-Naperville-Elgin, IL-IN HC T-4 (THYROXINE) TOTAL, SERUM $39.60 $120.00 Jan 1, 2026
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Crawford Memorial Hospital Robinson · Robinson, IL T3 Uptake (thyroid profile) LC $40.00 $50.00 Nov 12, 2025
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Salem Township Hospital Salem · Centralia, IL HC ASSAY OF TOTAL THYROXINE $43.90 $109.75 Dec 3, 2025
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La Rabida Children's Hospital Chicago · Chicago-Naperville-Elgin, IL-IN T4 $44.71 $44.71 Apr 1, 2026
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Northwestern Medicine Valley West Hospital Sandwich · Chicago-Naperville-Elgin, IL-IN HB T4 $45.50 $65.00 Apr 1, 2026
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Community First Medical Center Chicago · Chicago-Naperville-Elgin, IL-IN Thyroxine (thyroid chemical), total $48.75 $97.50 Apr 1, 2026
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Touchette Regional Hospital Cahokia Heights · St. Louis, MO-IL Thyroxine; total $48.98 $79.00 Apr 13, 2026
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St Elizabeths Hospital of the Hospital Sisters of the Third Order of St Francis O'Fallon · St. Louis, MO-IL HC THYROXINE (T-4) TOTAL $53.28 $74.00 Mar 24, 2026
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Heartland Regional Medical Center Marion · Marion-Herrin, IL HC T4 B $54.69 $287.81 Feb 3, 2026
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Trinity Rock Island Rock Island · Davenport-Moline-Rock Island, IA-IL HC THYROXINE; TOTAL $55.00 $68.75 Jan 28, 2026
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Community Hospital of Staunton Staunton · St. Louis, MO-IL THYROXINE (T4) $55.70 $111.40 Feb 9, 2026
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Shriners Childrens - Chicago Chicago · Chicago-Naperville-Elgin, IL-IN THYROXINE (THYROID CHEMICAL); TOTAL $58.90 $58.90 Mar 19, 2026
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Palos Community Hospital Palos Heights · Chicago-Naperville-Elgin, IL-IN HB Ref Free Thyroxine Index, T4 Total (Mayo) $59.50 $85.00 Apr 1, 2026
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Hopedale Medical Complex Hopedale · Peoria, IL T4 TOTAL $61.54 $87.92 Apr 6, 2026
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Northwestern Medicine Delnor Hospital Geneva · Chicago-Naperville-Elgin, IL-IN HB Ref Free Thyroxine Index, Thyroxine, Total (Q) $65.80 $94.00 Apr 1, 2026
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Carlinville Area Hospital Carlinville · St. Louis, MO-IL T7-TT4 $67.90 $97.00 Mar 21, 2026
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Riverside Medical Center Kankakee · Kankakee, IL THYROXINE (THYROID CHEMICAL); TOTAL $68.15 $256.00 Mar 15, 2026
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St Johns Hospital of the Hospital Sisters of the Third Order of St Francis Springfield · Springfield, IL HC THYROXINE (T-4) TOTAL $68.40 $95.00 Mar 24, 2026
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St Marys Hospital Decatur of Hospital Sisters of the Third Order of St Francis Decatur · Decatur, IL HC THYROXINE (T-4) TOTAL $68.40 $95.00 Mar 25, 2026
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Ferrell Hospital Community Foundation Eldorado · Eldorado, IL HC T4 B $70.50 $94.00 Sep 22, 2026
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St Josephs Hospital Hospital Sisters Third Order of St Francis Breese · St. Louis, MO-IL HC THYROXINE (T-4) TOTAL $74.88 $104.00 Mar 24, 2026
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Deaconess Illinois Union County Hospital Anna · Anna, IL HC T4 B $76.99 $208.06 Feb 3, 2026
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St Francis Hospital Sisters of the Third Order of St Francis Litchfield · Litchfield, IL HC THYROXINE (T-4) TOTAL $77.76 $108.00 Mar 24, 2026
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Thomas H Boyd Memorial Hospital Carrollton · Carrollton, IL Thyroxine (thyroid chemical), total $78.40 $98.00 Jul 7, 2026
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NorthShore University HealthSystems Glenbrook Hospital Glenview · Chicago-Naperville-Elgin, IL-IN Thyroxine (T4); Total (P) $81.90 $126.00 Jan 1, 2025
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NorthShore University HealthSystems Skokie Hospital Skokie · Chicago-Naperville-Elgin, IL-IN Thyroxine (T4); Total (P) $81.90 $126.00 Jan 1, 2025
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Mercyhealth Hospital & Medical Center - Harvard Harvard · Chicago-Naperville-Elgin, IL-IN CHG ASSAY OF THYROXINE TOTAL $83.36 $111.14 Mar 1, 2026
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Resilience Healthcare West Suburban Medical Center Oak Park · Chicago-Naperville-Elgin, IL-IN Thyroid Panel With TSH SO $83.83 $246.57 Mar 17, 2025
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Advocate Childrens Hospital Oak Lawn Oak Lawn · Chicago-Naperville-Elgin, IL-IN T4, TOTAL $85.00 $170.00 Nov 4, 2025
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Advocate Childrens Hospital Park Ridge Park Ridge · Chicago-Naperville-Elgin, IL-IN T4, TOTAL $85.00 $170.00 Nov 4, 2025
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Advocate Christ Medical Center Oak Lawn · Chicago-Naperville-Elgin, IL-IN T4, TOTAL $85.00 $170.00 Nov 4, 2025
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Advocate Condell Medical Center Libertyville · Chicago-Naperville-Elgin, IL-IN T4, TOTAL $85.00 $170.00 Nov 4, 2025
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Advocate Good Samaritan Hospital Downers Grove · Chicago-Naperville-Elgin, IL-IN T4, TOTAL $85.00 $170.00 Nov 4, 2025
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Advocate Good Shepherd Hospital Barrington · Chicago-Naperville-Elgin, IL-IN T4, TOTAL $85.00 $170.00 Nov 4, 2025
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Advocate Illinois Masonic Medical Center Chicago · Chicago-Naperville-Elgin, IL-IN T4, TOTAL $85.00 $170.00 Nov 4, 2025
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Advocate Lutheran General Hospital Park Ridge · Chicago-Naperville-Elgin, IL-IN T4, TOTAL $85.00 $170.00 Nov 4, 2025
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Advocate Sherman Hospital Elgin · Chicago-Naperville-Elgin, IL-IN T4, TOTAL $85.00 $170.00 Nov 4, 2025
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Advocate South Suburban Hospital Hazel Crest · Chicago-Naperville-Elgin, IL-IN T4, TOTAL $85.00 $170.00 Nov 4, 2025
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Advocate Trinity Hospital Chicago · Chicago-Naperville-Elgin, IL-IN T4, TOTAL $85.00 $170.00 Nov 4, 2025
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Morrison Community Hospital Morrison · Sterling, IL T4 - THYROXINE $85.50 $85.50 Mar 13, 2026
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Hshs Good Shepherd Hospital Shelbyville · Shelbyville, IL ASSAY OF TOTAL THYROXINE $86.40 $120.00 Mar 24, 2026
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Sarah Bush Lincoln Health Center Mattoon · Charleston-Mattoon, IL Thyroxine (thyroid chemical), total $88.00 $88.00 Jun 3, 2026
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Jersey Community Hospital Jerseyville · St. Louis, MO-IL T3 Uptake QST $90.00 $90.00 Mar 10, 2026
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Deaconess Illinois Crossroads Mount Vernon · Mount Vernon, IL HC T4 B $91.26 $414.81 Feb 3, 2026
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Richland Memorial Hospital Olney · Olney, IL T-4 $97.00 $97.00 Apr 15, 2026
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St Anthonys Memorial Hospital of the Hospital Sisters of the Third Order of St Francis Mattoon · Charleston-Mattoon, IL HC THYROXINE (T-4) TOTAL $97.20 $135.00 Mar 24, 2026
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Mercyhealth Crystal Lake Hospital & Medical Center Crystal Lake · Chicago-Naperville-Elgin, IL-IN CHG ASSAY OF THYROXINE TOTAL $97.97 $130.63 Mar 1, 2026
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Edward Hospital Naperville · Chicago-Naperville-Elgin, IL-IN HC THYROXINE TOTAL $99.00 $99.00 Apr 1, 2026
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Elmhurst Memorial Hospital Elmhurst · Chicago-Naperville-Elgin, IL-IN HC THYROXINE TOTAL $99.00 $99.00 Apr 1, 2026
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Hshs Holy Family Hospital Greenville · St. Louis, MO-IL HC THYROXINE (T-4) TOTAL-90 $100.08 $139.00 Mar 24, 2026
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Washington County Hospital Nashville · Nashville, IL LCHG T4 TOTAL $100.80 $126.00 Jun 1, 2026
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Rockford Memorial Hospital Rockford · Rockford, IL CHG ASSAY OF THYROXINE TOTAL $108.05 $144.07 Mar 1, 2026
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FHN Memorial Hospital Freeport · Freeport, IL Thyroxine (thyroid chemical), total $110.89 $138.61 Jan 22, 2026
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Anderson Hospital Maryville · St. Louis, MO-IL THYROXINE (T4) $110.90 $221.80 Feb 6, 2026
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Sarah D Culbertson Memorial Hospital Rushville · Rushville, IL Thyroxine (thyroid chemical), total $119.70 $133.00 May 26, 2026
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Northwest Community Hospital Arlington Heights · Chicago-Naperville-Elgin, IL-IN Hb Assay Of Total Thyroxine $123.00 $123.00 Apr 1, 2026
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Louis A Weiss Memorial Hospital Chicago · Chicago-Naperville-Elgin, IL-IN Thyroid Panel With TSH SO $123.51 $363.25 Mar 17, 2025
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Endeavor Health Highland Park Hospital Highland Park · Chicago-Naperville-Elgin, IL-IN HB THYROXINE (T4); TOTAL (P) $126.00 $126.00 Apr 1, 2026
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Northshore University Healthsystem - Evanston Hospital Evanston · Chicago-Naperville-Elgin, IL-IN HB THYROXINE (T4); TOTAL (P) $126.00 $126.00 Apr 1, 2026
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Swedish Covenant Health Chicago · Chicago-Naperville-Elgin, IL-IN HB THYROXINE (T4); TOTAL (P) $126.00 $126.00 Apr 1, 2026
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City of Clinton Clinton · Clinton, IL Thyroxine (thyroid chemical), total $127.75 $127.75 Jun 8, 2026
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Carle Health Pekin Hospital Pekin · Peoria, IL T-4 $131.00 $131.00 Apr 15, 2026
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Methodist Medical Center of Illinois Peoria · Peoria, IL T-4 $131.00 $131.00 Apr 15, 2026
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Proctor Community Hospital Peoria · Peoria, IL T-4 $131.00 $131.00 Apr 15, 2026
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St Josephs Hospital of the Hospital Sisters of the Third Order of St Francis Highland · St. Louis, MO-IL HC THYROXINE (T-4) TOTAL $133.92 $186.00 Mar 24, 2026
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Rochelle Community Hospital Rochelle · Rochelle, IL Thyroxine (thyroid chemical), total $139.00 $139.00 Sep 28, 2026
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County of Clay Flora · Flora, IL LCHG T4 TOTAL $142.00 $142.00 May 7, 2026
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Pinckneyville Community Hospital Pinckneyville · Pinckneyville, IL Thyroxine (thyroid chemical), total $142.00 $142.00 Jun 8, 2026
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Fayette County Hospital Vandalia · Vandalia, IL Thyroxine (thyroid chemical), total $149.00 $149.00 Jun 12, 2026
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Ann & Robert H. Lurie Children's Hospital of Chicago Chicago · Chicago-Naperville-Elgin, IL-IN H T4 (THYROXINE) TOTAL ONLY SERUM $175.70 $251.00 Apr 1, 2026
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Jackson Park Hospital Foundation Chicago · Chicago-Naperville-Elgin, IL-IN T4 TEST $177.23 $221.54 Dec 26, 2025
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Gibson Community Hospital Gibson City · Champaign-Urbana, IL T-4, TOTAL $190.00 $190.00 Jan 27, 2026
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Sparta Community Hospital Sparta · Sparta, IL TOTAL T4 $198.25 $198.25 Jan 8, 2026
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Ingalls Memorial Hospital Harvey · Chicago-Naperville-Elgin, IL-IN Hc Thyroxine; Total $215.00 $215.00 Apr 1, 2026
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Vista Medical Center East Waukegan · Chicago-Naperville-Elgin, IL-IN THYROXINE T4,TOTAL $222.70 $222.70 Mar 31, 2025
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The University of Chicago Medical Center Chicago · Chicago-Naperville-Elgin, IL-IN Hc Thyroxine; Total $265.00 $265.00 Apr 1, 2026
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Harrisburg Medical Center Harrisburg · Harrisburg, IL HC Thyroxine; Total $265.60 $332.00 Mar 4, 2026
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Herrin Hospital Herrin · Marion-Herrin, IL HC Thyroxine; Total $265.60 $332.00 Mar 4, 2026
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Memorial Hospital of Carbondale Carbondale · Carbondale, IL HC Thyroxine; Total $265.60 $332.00 Mar 4, 2026
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St Joseph Memorial Hospital Murphysboro · Carbondale, IL HC Thyroxine; Total $265.60 $332.00 Mar 4, 2026
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Hammond Henry Dist Hospital Geneseo · Davenport-Moline-Rock Island, IA-IL Thyroxine (thyroid chemical), total $544.50 $605.00 Jan 22, 2026
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Hospital The hospital that published the price, its city and the line exactly as written in its price file.
Cash price The hospital's own price for a patient paying without insurance (“discounted cash” in its price file). Hospitals must publish it under federal law, 45 CFR 180.50. Call to confirm it before booking. More
List price The hospital's full chargemaster price (“gross charge”) before any discount. Almost nobody pays it; the gap to the cash price shows what the self-pay discount is worth. More
File date When the hospital last updated its price file, as the file says itself. A dash means the file gives no date.
No cash discount This line's cash price equals the hospital's full list price. Many hospitals still reduce bills for uninsured patients: ask the billing office for its self-pay discount in writing. More

By metro area

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

Metro areaHospitalsLowestMedian
Chicago-Naperville-Elgin, IL-IN 54 $6.00 $81.90
St. Louis, MO-IL 10 $23.24 $71.39
Peoria, IL 5 $8.00 $131.00
Davenport-Moline-Rock Island, IA-IL 4 $22.80 $42.80
Carbondale, IL 2 $265.60 $265.60
Champaign-Urbana, IL 2 $17.00 $103.50
Charleston-Mattoon, IL 2 $88.00 $92.60
Marion-Herrin, IL 2 $54.69 $160.14
Anna, IL 1 $76.99 $76.99
Bloomington, IL 1 $8.00 $8.00
Carrollton, IL 1 $78.40 $78.40
Clinton, IL 1 $127.75 $127.75
Centralia, IL 1 $43.90 $43.90
Danville, IL 1 $22.00 $22.00
Decatur, IL 1 $68.40 $68.40
Eldorado, IL 1 $70.50 $70.50
Fairfield, IL 1 $18.40 $18.40
Flora, IL 1 $142.00 $142.00
Freeport, IL 1 $110.89 $110.89
Harrisburg, IL 1 $265.60 $265.60
Havana, IL 1 $22.00 $22.00
Kankakee, IL 1 $68.15 $68.15
Litchfield, IL 1 $77.76 $77.76
Mount Vernon, IL 1 $91.26 $91.26
Nashville, IL 1 $100.80 $100.80
Olney, IL 1 $97.00 $97.00
Pinckneyville, IL 1 $142.00 $142.00
Quincy, IL-MO 1 $18.23 $18.23
Robinson, IL 1 $40.00 $40.00
Rushville, IL 1 $119.70 $119.70
Rochelle, IL 1 $139.00 $139.00
Rockford, IL 1 $108.05 $108.05
Shelbyville, IL 1 $86.40 $86.40
Sparta, IL 1 $198.25 $198.25
Springfield, IL 1 $68.40 $68.40
Sterling, IL 1 $85.50 $85.50
Taylorville, IL 1 $25.50 $25.50
Vandalia, IL 1 $149.00 $149.00
Market A metro area (as the Census Bureau defines it) or, outside metro areas, a town. Each links to every hospital price there.
Hospitals How many hospitals publish a cash price for this code here. Each hospital counts once, at its lowest outpatient cash price.
Lowest The lowest cash price among those hospitals.
Median The middle cash price: half of the hospitals charge less, half charge more. One price per hospital. More

What it is

A total T4 test measures all the thyroxine hormone in the blood, both bound and free. Most doctors now order free T4 (84439) instead, which is less affected by pregnancy and medicines.

What the price covers

The price usually covers running the test. The blood draw (36415) is often billed as a separate line.

Total thyroxine (T4) blood test in other states

Median cash price across the state's hospitals.