Total T4 test cost in Denver, CO
In Denver-Aurora-Centennial, CO, 22 hospitals list a cash price for total thyroxine (T4) blood test: from $9.74 to $1,381.46, with a median of $556.87. The lowest listed price is at Denver Health and Hospital Authority — $547.13 less than the median here. Across Colorado, the median is $86.38 at 46 hospitals.
Cash prices at 22 facilities across 10 cities for code 84436, as an outpatient — the setting a self-pay patient normally buys. Collected Sep 29, 2026; the hospital files themselves were last updated between Apr 1, 2026 and Sep 1, 2026.
Lowest$9.74Denver Health and Hospital Authority
Median$556.87half pay less
Highest$1,381.46in this market
Difference141.8×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 Denver-Aurora-Centennial, CO.
median
Lowest $9.74Highest $1,381.46
Hospitals, cheapest first
| Hospital | Cash price | List price | Insurers pay | Off list | File date |
|---|---|---|---|---|---|
| Denver Health and Hospital Authority lowest Denver, CO · (303) 436-4927 HC THYROXINE; TOTAL ARUP 0070141 | $9.74 | $27.81 | $6.87–$24.03 | 65% | Apr 30, 2026 source file |
| Denver Health and Hospital Authority Denver, CO · (303) 436-4927 HC THYROXINE, TOTAL T4 ARUP 3005978 | $11.26 | $32.15 | $6.87–$24.03 | 65% | Apr 30, 2026 source file |
| Childrens Hospital Colorado Aurora, CO · (720) 777-1234 HB=CSHB ZZ-T4 TOTAL | $20.15 | $31.00 | $3.10–$28.52 | 35% | Apr 17, 2026 source file |
| National Jewish Health Denver, CO · (303) 388-4461 HC THYROXINE TOTAL T4 | $38.33 | $54.75 | $6.87–$46.54 | 30% | — source file |
| Cobalt Rehabilitation Hospital Denver Westminster, CO Total Thyroxine | $68.70 | $68.70 | $5.15–$58.40 | — | Aug 6, 2026 source file |
| Childrens Hospital Colorado Aurora, CO · (720) 777-1234 HB=CSHB T4 | $69.55 | $107.00 | $10.70–$98.44 | 35% | Apr 17, 2026 source file |
| Childrens Hospital Colorado Aurora, CO · (720) 777-1234 HB=T4 | $104.65 | $161.00 | $16.10–$148.12 | 35% | Apr 17, 2026 source file |
| AdventHealth Porter Denver, CO · (303) 778-1955 HC ASSAY OF TOTAL THYROXINE - T4 (THYROID HORMONE) RIA | $110.01 | $110.01 | — | — | Apr 1, 2026 source file |
| AdventHealth Porter Denver, CO · (303) 778-1955 HC T4 THYROID PANEL WITH FTI - ARUP | $110.01 | $110.01 | — | — | Apr 1, 2026 source file |
| AdventHealth Porter Denver, CO · (303) 778-1955 HC THYROID T4 - ARUP | $110.01 | $110.01 | — | — | Apr 1, 2026 source file |
| AdventHealth Porter Denver, CO · (303) 778-1955 HC THYROXINE T4 TOTAL - ARUP | $110.01 | $110.01 | — | — | Apr 1, 2026 source file |
| AdventHealth Littleton Littleton, CO · (303) 730-8900 HC ASSAY OF TOTAL THYROXINE - T4 (THYROID HORMONE) RIA | $110.01 | $110.01 | — | — | Apr 1, 2026 source file |
| AdventHealth Littleton Littleton, CO · (303) 730-8900 HC THYROID T4 - ARUP | $110.01 | $110.01 | — | — | Apr 1, 2026 source file |
| AdventHealth Littleton Littleton, CO · (303) 730-8900 HC THYROXINE T4 TOTAL - ARUP | $110.01 | $110.01 | — | — | Apr 1, 2026 source file |
| AdventHealth Castle Rock Castle Rock, CO · (720) 455-5000 HC T4 THYROID PANEL WITH FTI - ARUP | $110.01 | $110.01 | — | — | Apr 1, 2026 source file |
| AdventHealth Castle Rock Castle Rock, CO · (720) 455-5000 HC THYROXINE T4 TOTAL | $110.01 | $110.01 | — | — | Apr 1, 2026 source file |
| AdventHealth Castle Rock Castle Rock, CO · (720) 455-5000 HC ASSAY OF TOTAL THYROXINE - T4 (THYROID HORMONE) RIA | $110.01 | $110.01 | — | — | Apr 1, 2026 source file |
| AdventHealth Porter Denver, CO · (303) 778-1955 HC THYROXINE T4 TOTAL | $110.01 | $110.01 | — | — | Apr 1, 2026 source file |
| AdventHealth Littleton Littleton, CO · (303) 730-8900 HC T4 THYROID PANEL WITH FTI - ARUP | $110.01 | $110.01 | — | — | Apr 1, 2026 source file |
| AdventHealth Castle Rock Castle Rock, CO · (720) 455-5000 HC THYROXINE T4 TOTAL - ARUP | $110.01 | $110.01 | — | — | Apr 1, 2026 source file |
| AdventHealth Castle Rock Castle Rock, CO · (720) 455-5000 HC THYROID T4 - ARUP | $110.01 | $110.01 | — | — | Apr 1, 2026 source file |
| AdventHealth Parker Parker, CO · (303) 269-4000 HC THYROXINE T4 TOTAL | $110.01 | $110.01 | — | — | Apr 1, 2026 source file |
| AdventHealth Parker Parker, CO · (303) 269-4000 HC ASSAY OF TOTAL THYROXINE - T4 (THYROID HORMONE) RIA | $110.01 | $110.01 | — | — | Apr 1, 2026 source file |
| AdventHealth Parker Parker, CO · (303) 269-4000 HC T4 THYROID PANEL WITH FTI - ARUP | $110.01 | $110.01 | — | — | Apr 1, 2026 source file |
| AdventHealth Parker Parker, CO · (303) 269-4000 HC THYROID T4 - ARUP | $110.01 | $110.01 | — | — | Apr 1, 2026 source file |
| AdventHealth Parker Parker, CO · (303) 269-4000 HC THYROXINE T4 TOTAL - ARUP | $110.01 | $110.01 | — | — | Apr 1, 2026 source file |
| AdventHealth Littleton Littleton, CO · (303) 730-8900 HC THYROXINE T4 TOTAL | $110.01 | $110.01 | — | — | Apr 1, 2026 source file |
| Childrens Hospital Colorado Aurora, CO · (720) 777-1234 HB=FRTUP - THYROXINE, TOTAL | $135.85 | $209.00 | $20.90–$192.28 | 35% | Apr 17, 2026 source file |
| Spalding at Psl Denver, CO · (303) 839-6000 Thyroxine; total | $184.93 | $184.93 | $6.87 | — | Sep 1, 2026 source file |
| HCA Healthone Spalding Rehabilitation Aurora, CO THYROXINE T4 TOTAL | $184.93 | $184.93 | $49.75–$81.74 | — | Sep 1, 2026 source file |
| HCA Healthone Spalding Rehabilitation Aurora, CO Thyroxine; total | $184.93 | $184.93 | $6.87 | — | Sep 1, 2026 source file |
| Spalding at Psl Denver, CO · (303) 839-6000 THYROXINE T4 TOTAL | $184.93 | $184.93 | $28.11–$166.44 | — | Sep 1, 2026 source file |
| HCA Healthone Belmar ER Lakewood, CO · (303) 788-5000 THYROXINE T4 TOTAL | $556.87 | $556.87 | $84.64–$501.18 | — | Sep 1, 2026 source file |
| HCA Healthone Swedish Englewood, CO · (303) 788-5000 Thyroxine; total | $556.87 | $556.87 | $6.87–$32.63 | — | Sep 1, 2026 source file |
| HCA Healthone Swedish Englewood, CO · (303) 788-5000 THYROXINE T4 TOTAL | $556.87 | $556.87 | $84.64–$501.18 | — | Sep 1, 2026 source file |
| HCA Healthone Belmar ER Lakewood, CO · (303) 788-5000 Thyroxine; total | $556.87 | $556.87 | $6.87–$32.63 | — | Sep 1, 2026 source file |
| HCA Healthone Southwest ER Littleton, CO · (303) 788-5000 Thyroxine; total | $556.87 | $556.87 | $6.87–$32.63 | — | Sep 1, 2026 source file |
| HCA Healthone Southwest ER Littleton, CO · (303) 788-5000 THYROXINE T4 TOTAL | $556.87 | $556.87 | $84.64–$501.18 | — | Sep 1, 2026 source file |
| HCA Healthone Mountain Ridge Thornton, CO · (303) 451-7800 Thyroxine; total | $633.48 | $633.48 | $6.87–$32.63 | — | Sep 1, 2026 source file |
| HCA Healthone Mountain Ridge Thornton, CO · (303) 451-7800 THYROXINE T4 TOTAL | $633.48 | $633.48 | $96.29–$570.13 | — | Sep 1, 2026 source file |
| HCA Healthone Northeast ER Thornton, CO · (303) 451-7800 THYROXINE T4 TOTAL | $633.48 | $633.48 | $96.29–$570.13 | — | Sep 1, 2026 source file |
| HCA Healthone Northeast ER Thornton, CO · (303) 451-7800 Thyroxine; total | $633.48 | $633.48 | $6.87–$32.63 | — | Sep 1, 2026 source file |
| HCA Healthone Rose Denver, CO · (303) 320-2121 Thyroxine; total | $1,013.00 | $1,013.00 | $6.87–$32.63 | — | Sep 1, 2026 source file |
| HCA Healthone Central Park ER Denver, CO · (303) 320-2121 Thyroxine; total | $1,013.00 | $1,013.00 | $6.87–$32.63 | — | Sep 1, 2026 source file |
| HCA Healthone Central Park ER Denver, CO · (303) 320-2121 THYROXINE T4 TOTAL | $1,013.00 | $1,013.00 | $153.98–$911.70 | — | Sep 1, 2026 source file |
| HCA Healthone Rose Denver, CO · (303) 320-2121 THYROXINE T4 TOTAL | $1,013.00 | $1,013.00 | $153.98–$911.70 | — | Sep 1, 2026 source file |
| HCA Healthone South Parker ER Parker, CO Thyroxine; total | $1,130.03 | $1,130.03 | $6.87–$32.63 | — | Sep 1, 2026 source file |
| HCA Healthone Sky Ridge Lone Tree, CO · (720) 225-1000 THYROXINE T4 TOTAL | $1,130.03 | $1,130.03 | $171.76–$1,017.03 | — | Sep 1, 2026 source file |
| HCA Healthone Sky Ridge Lone Tree, CO · (720) 225-1000 Thyroxine; total | $1,130.03 | $1,130.03 | $6.87–$32.63 | — | Sep 1, 2026 source file |
| HCA Healthone South Parker ER Parker, CO THYROXINE T4 TOTAL | $1,130.03 | $1,130.03 | $171.76–$1,017.03 | — | Sep 1, 2026 source file |
| HCA Healthone Presbyterian St Lukes Denver, CO · (303) 839-6000 Thyroxine; total | $1,308.50 | $1,308.50 | $6.87–$32.63 | — | Sep 1, 2026 source file |
| HCA Healthone Presbyterian St Lukes Denver, CO · (303) 839-6000 THYROXINE T4 TOTAL | $1,308.50 | $1,308.50 | $198.89–$1,177.65 | — | Sep 1, 2026 source file |
| HCA Healthone Aurora Aurora, CO · (303) 873-5511 Thyroxine; total | $1,381.46 | $1,381.46 | $6.87–$32.63 | — | Sep 1, 2026 source file |
| Centennial Hospital A Campus of Tmca Englewood, CO · (303) 873-5511 THYROXINE T4 TOTAL | $1,381.46 | $1,381.46 | $209.98–$1,243.31 | — | Sep 1, 2026 source file |
| Centennial Hospital A Campus of Tmca Englewood, CO · (303) 873-5511 Thyroxine; total | $1,381.46 | $1,381.46 | $6.87–$32.63 | — | Sep 1, 2026 source file |
| HCA Healthone Aurora Aurora, CO · (303) 873-5511 THYROXINE T4 TOTAL | $1,381.46 | $1,381.46 | $209.98–$1,243.31 | — | Sep 1, 2026 source file |
Outpatient: lowest $9.74, median $556.87, highest $1,381.46 — a 141.8× difference within the same market.
As an inpatient, the same code is billed by 8 facilities here, median $89.36. 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 3 of 18 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 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.