Total T4 test cost in Denver, CO — inpatient
In Denver-Aurora-Centennial, CO, 7 hospitals list a cash price for total thyroxine (T4) blood test as an inpatient: from $9.74 to $110.01, with a median of $110.01. The lowest listed price is at Denver Health and Hospital Authority — $100.27 less than the median here. Across Colorado, the median is $94.13 at 42 hospitals.
Cash prices at 7 facilities across 5 cities for code 84436, as an inpatient (admitted to hospital) . Collected Sep 23, 2026; the hospital files themselves were last updated between Apr 1, 2026 and Apr 30, 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 Denver-Aurora-Centennial, CO.
Hospitals, cheapest first
| Hospital | Cash price | List price | Insurers pay | Off list |
|---|---|---|---|---|
| Denver Health and Hospital Authority lowest Denver, CO · (303) 436-4927 HC THYROXINE; TOTAL ARUP 0070141 File of Apr 30, 2026 · source file | $9.74 | $27.81 | $9.54 | 65% |
| Denver Health and Hospital Authority Denver, CO · (303) 436-4927 HC THYROXINE, TOTAL T4 ARUP 3005978 File of Apr 30, 2026 · source file | $11.26 | $32.15 | $11.03 | 65% |
| Childrens Hospital Colorado Aurora, CO · (720) 777-1234 HB=CSHB ZZ-T4 TOTAL File of Apr 17, 2026 · source file | $20.15 | $31.00 | $4.65–$28.52 | 35% |
| National Jewish Health Denver, CO · (303) 388-4461 HC THYROXINE TOTAL T4 source file | $38.33 | $54.75 | $6.87–$46.54 | 30% |
| Childrens Hospital Colorado Aurora, CO · (720) 777-1234 HB=CSHB T4 File of Apr 17, 2026 · source file | $69.55 | $107.00 | $16.05–$98.44 | 35% |
| Childrens Hospital Colorado Aurora, CO · (720) 777-1234 HB=T4 File of Apr 17, 2026 · source file | $104.65 | $161.00 | $24.15–$148.12 | 35% |
| AdventHealth Castle Rock Castle Rock, CO · (720) 455-5000 HC THYROXINE T4 TOTAL+4 more lines at this price File of Apr 1, 2026 · source file | $110.01 | $110.01 | — | — |
| AdventHealth Porter Denver, CO · (303) 778-1955 HC THYROXINE T4 TOTAL+4 more lines at this price File of Apr 1, 2026 · source file | $110.01 | $110.01 | — | — |
| AdventHealth Parker Parker, CO · (303) 269-4000 HC THYROXINE T4 TOTAL+4 more lines at this price File of Apr 1, 2026 · source file | $110.01 | $110.01 | — | — |
| AdventHealth Littleton Littleton, CO · (303) 730-8900 HC THYROXINE T4 TOTAL+4 more lines at this price File of Apr 1, 2026 · source file | $110.01 | $110.01 | — | — |
| Childrens Hospital Colorado Aurora, CO · (720) 777-1234 HB=FRTUP - THYROXINE, TOTAL File of Apr 17, 2026 · source file | $135.85 | $209.00 | $31.35–$192.28 | 35% |
Inpatient: lowest $9.74, median $110.01, highest $110.01 — a 11.3× difference within the same market.
As an outpatient, the same code is billed by 20 facilities here, median $556.87 — that is the price to compare if you are not being admitted.
Cash or insurance?
At 2 of 3 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.